diff --git a/VERSION.properties b/VERSION.properties
index 1526f59..8f0bf56 100644
--- a/VERSION.properties
+++ b/VERSION.properties
@@ -1,2 +1,2 @@
-client.version=1.2.94
-server.version=1.2.88
+client.version=1.2.95
+server.version=1.2.89
diff --git a/scripts/devnet/test_login_guard_precheck.js b/scripts/devnet/test_login_guard_precheck.js
new file mode 100644
index 0000000..43838a4
--- /dev/null
+++ b/scripts/devnet/test_login_guard_precheck.js
@@ -0,0 +1,87 @@
+#!/usr/bin/env node
+/* eslint-disable no-console */
+
+const crypto = require('crypto');
+const web3 = require('@solana/web3.js');
+
+const RPC = process.env.SOLANA_RPC || 'https://api.devnet.solana.com';
+const LOGIN_GUARD_PROGRAM_ID = '3xkopA7cXagxzMFrKdv3NCBfV6BKiRJCk69kr27M2sRo';
+const SIM_PAYER = 'FUc28vNixp7F3nnkpGVt6nuJbgvJ4429v4B5wS52Df6P';
+const login = String(process.argv[2] || '').trim().toLowerCase();
+
+if (!login) {
+  console.error('Usage: node scripts/devnet/test_login_guard_precheck.js <login>');
+  process.exit(1);
+}
+
+function discriminator(name) {
+  return crypto.createHash('sha256').update(`global:${name}`).digest().subarray(0, 8);
+}
+
+function encodeClassifyLoginData(loginValue) {
+  const disc = discriminator('classify_login');
+  const str = Buffer.from(loginValue, 'utf8');
+  const len = Buffer.alloc(4);
+  len.writeUInt32LE(str.length, 0);
+  return Buffer.concat([disc, len, str]);
+}
+
+function decodeU32FromBase64(b64) {
+  const bytes = Buffer.from(b64, 'base64');
+  if (bytes.length < 4) throw new Error('bad returnData');
+  return bytes.readUInt32LE(0);
+}
+
+async function main() {
+  const connection = new web3.Connection(RPC, 'confirmed');
+  const programId = new web3.PublicKey(LOGIN_GUARD_PROGRAM_ID);
+  const payer = new web3.PublicKey(SIM_PAYER);
+
+  const ix = new web3.TransactionInstruction({
+    programId,
+    keys: [{ pubkey: payer, isSigner: true, isWritable: false }],
+    data: encodeClassifyLoginData(login),
+  });
+
+  const { blockhash } = await connection.getLatestBlockhash('confirmed');
+  const v0 = new web3.TransactionMessage({
+    payerKey: payer,
+    recentBlockhash: blockhash,
+    instructions: [ix],
+  }).compileToV0Message();
+  const tx = new web3.VersionedTransaction(v0);
+
+  const sim = await connection.simulateTransaction(tx, {
+    commitment: 'confirmed',
+    sigVerify: false,
+    replaceRecentBlockhash: true,
+  });
+
+  if (sim?.value?.err) {
+    console.error('Simulation error:', sim.value.err);
+    console.error('Logs:', sim?.value?.logs || []);
+    process.exit(2);
+  }
+
+  const returnData = sim?.value?.returnData;
+  if (!returnData || returnData.programId !== LOGIN_GUARD_PROGRAM_ID) {
+    console.error('No returnData from login_guard');
+    console.error(JSON.stringify(sim, null, 2));
+    process.exit(3);
+  }
+
+  const cls = decodeU32FromBase64(returnData.data[0]);
+  const className = cls === 0 ? 'free' : cls === 1 ? 'premium' : cls === 2 ? 'company' : `unknown(${cls})`;
+  console.log(JSON.stringify({
+    login,
+    classCode: cls,
+    className,
+    logs: sim?.value?.logs || [],
+  }, null, 2));
+}
+
+main().catch((e) => {
+  console.error(e?.stack || e?.message || String(e));
+  process.exit(10);
+});
+
diff --git a/shine-UI/js/pages/register-view.js b/shine-UI/js/pages/register-view.js
index 46bb9fb..74c25f8 100644
--- a/shine-UI/js/pages/register-view.js
+++ b/shine-UI/js/pages/register-view.js
@@ -1,7 +1,7 @@
 import { renderHeader } from '../components/header.js';
 import { authService, clearAuthMessages, state } from '../state.js';
 import { toUserMessage } from '../services/ui-error-texts.js';
-import { precheckLoginClassOnSolana } from '../services/solana-register-service.js';
+import { formatSolanaErrorDetails, precheckLoginClassOnSolana } from '../services/solana-register-service.js';
 
 export const pageMeta = { id: 'register-view', title: 'Зарегистрироваться', showAppChrome: false };
 
@@ -90,12 +90,18 @@ export function render({ navigate }) {
       await authService.reconnect(state.entrySettings.shineServer);
       const isFree = await authService.ensureLoginFree(login);
       let className = '';
+      let precheckWarning = '';
       if (isFree) {
-        const precheck = await precheckLoginClassOnSolana({
-          login,
-          solanaEndpoint: state.entrySettings.solanaServer,
-        });
-        className = precheck.className;
+        try {
+          const precheck = await precheckLoginClassOnSolana({
+            login,
+            solanaEndpoint: state.entrySettings.solanaServer,
+          });
+          className = precheck.className;
+        } catch (precheckError) {
+          className = 'free';
+          precheckWarning = formatSolanaErrorDetails(precheckError);
+        }
       }
       lastCheckedLogin = login;
       lastCheckedFree = isFree;
@@ -104,7 +110,9 @@ export function render({ navigate }) {
         statusText.textContent = 'Логин уже занят ❌';
         statusText.className = 'is-unavailable';
       } else if (className === 'free') {
-        statusText.textContent = 'Логин свободен ✅';
+        statusText.textContent = precheckWarning
+          ? `Логин свободен ✅ (предпроверка Solana недоступна: ${precheckWarning})`
+          : 'Логин свободен ✅';
         statusText.className = 'is-available';
       } else if (className === 'premium') {
         statusText.textContent = 'Логин свободен, но это премиум-логин (покупка через DAO) ❌';
@@ -119,7 +127,9 @@ export function render({ navigate }) {
       formError.style.display = 'none';
       return isFree && className === 'free';
     } catch (error) {
-      statusText.textContent = toUserMessage(error, 'Не удалось проверить логин');
+      const base = toUserMessage(error, 'Не удалось проверить логин');
+      const details = formatSolanaErrorDetails(error);
+      statusText.textContent = `${base}. Детали: ${details}`;
       statusText.className = 'is-unavailable';
       return false;
     } finally {
diff --git a/shine-UI/js/pages/registration-payment-view.js b/shine-UI/js/pages/registration-payment-view.js
index 79636b6..00c8b78 100644
--- a/shine-UI/js/pages/registration-payment-view.js
+++ b/shine-UI/js/pages/registration-payment-view.js
@@ -11,7 +11,7 @@ import {
   getBalanceSol,
   getTopupSiteUrl,
 } from '../services/solana-wallet-service.js';
-import { registerUserOnSolana } from '../services/solana-register-service.js';
+import { formatSolanaErrorDetails, registerUserOnSolana } from '../services/solana-register-service.js';
 
 export const pageMeta = { id: 'registration-payment-view', title: 'Оплата регистрации', showAppChrome: false };
 const MIN_REQUIRED_SOL = 0.01;
@@ -192,7 +192,7 @@ export function render({ navigate }) {
           solanaEndpoint: state.entrySettings.solanaServer,
         });
       } catch (solanaError) {
-        const solanaMsg = String(solanaError?.message || '');
+        const solanaMsg = formatSolanaErrorDetails(solanaError);
         // Пользователь уже зарегистрирован в Solana — продолжаем
         if (!solanaMsg.includes('already') && !solanaMsg.includes('UserAlreadyExists')) {
           throw new Error(`Ошибка регистрации в Solana: ${solanaMsg}`);
diff --git a/shine-UI/js/services/solana-register-service.js b/shine-UI/js/services/solana-register-service.js
index 2269601..ea81677 100644
--- a/shine-UI/js/services/solana-register-service.js
+++ b/shine-UI/js/services/solana-register-service.js
@@ -7,7 +7,8 @@ import {
 } from '../solana-programs.js';
 
 const CREATE_USER_PDA_DISCRIMINATOR = new Uint8Array([139, 157, 13, 41, 142, 174, 226, 214]);
-const CLASSIFY_LOGIN_DISCRIMINATOR = new Uint8Array([118, 253, 204, 124, 22, 232, 235, 32]);
+const CLASSIFY_LOGIN_DISCRIMINATOR = new Uint8Array([112, 97, 152, 32, 255, 73, 108, 86]);
+const PRECHECK_SIM_PAYER = 'FUc28vNixp7F3nnkpGVt6nuJbgvJ4429v4B5wS52Df6P';
 const ED25519_PROGRAM_ID = 'Ed25519SigVerify111111111111111111111111111';
 const SYSVAR_INSTRUCTIONS_ID = 'Sysvar1nstructions1111111111111111111111111';
 
@@ -197,24 +198,61 @@ function decodeU32FromB64(rawB64) {
   return new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength).getUint32(0, true);
 }
 
+function safeJson(value) {
+  try {
+    return JSON.stringify(value);
+  } catch {
+    return String(value);
+  }
+}
+
+export function formatSolanaErrorDetails(error) {
+  const parts = [];
+  const msg = String(error?.message || error || '').trim();
+  if (msg) parts.push(msg);
+
+  const logs = error?.logs || error?.transactionLogs || error?.simulationLogs || error?.data?.logs;
+  if (Array.isArray(logs) && logs.length) {
+    parts.push(`Logs: ${logs.join(' | ')}`);
+  }
+
+  const errObj = error?.value?.err || error?.err || error?.data?.err;
+  if (errObj) {
+    parts.push(`Err: ${safeJson(errObj)}`);
+  }
+
+  if (!parts.length) return 'unknown';
+  return parts.join(' :: ');
+}
+
 export async function precheckLoginClassOnSolana({ login, solanaEndpoint }) {
   const solana = await loadSolanaLib();
   const connection = new solana.Connection(String(solanaEndpoint || ''), 'confirmed');
   const loginGuardProgram = new solana.PublicKey(SHINE_LOGIN_GUARD_PROGRAM_ID);
-  const signer = solana.Keypair.generate();
+  const payer = new solana.PublicKey(PRECHECK_SIM_PAYER);
   const ix = new solana.TransactionInstruction({
     programId: loginGuardProgram,
-    keys: [{ pubkey: signer.publicKey, isSigner: true, isWritable: false }],
+    keys: [{ pubkey: payer, isSigner: true, isWritable: false }],
     data: serializeClassifyLoginArgs(String(login || '').toLowerCase()),
   });
-  const tx = new solana.Transaction().add(ix);
-  tx.feePayer = signer.publicKey;
-  tx.recentBlockhash = (await connection.getLatestBlockhash('confirmed')).blockhash;
-  tx.sign(signer);
+  const { blockhash } = await connection.getLatestBlockhash('confirmed');
+  const v0Message = new solana.TransactionMessage({
+    payerKey: payer,
+    recentBlockhash: blockhash,
+    instructions: [ix],
+  }).compileToV0Message();
+  const tx = new solana.VersionedTransaction(v0Message);
 
-  const sim = await connection.simulateTransaction(tx, { commitment: 'confirmed', sigVerify: true });
+  const sim = await connection.simulateTransaction(tx, {
+    commitment: 'confirmed',
+    sigVerify: false,
+    replaceRecentBlockhash: true,
+  });
   if (sim?.value?.err) {
-    throw new Error(`LOGIN_GUARD_SIMULATION_FAILED: ${JSON.stringify(sim.value.err)}`);
+    const simErr = new Error(`LOGIN_GUARD_SIMULATION_FAILED: ${safeJson(sim.value.err)}`);
+    simErr.logs = sim?.value?.logs || [];
+    simErr.err = sim?.value?.err;
+    throw simErr;
   }
   const returnData = sim?.value?.returnData;
   if (!returnData || returnData.programId !== SHINE_LOGIN_GUARD_PROGRAM_ID) {
diff --git a/shine-solana/shine/programs/shine_login_guard/src/dictionaries/trademarks/tech_global.txt b/shine-solana/shine/programs/shine_login_guard/src/dictionaries/trademarks/tech_global.txt
index 02feb60..58c689e 100644
--- a/shine-solana/shine/programs/shine_login_guard/src/dictionaries/trademarks/tech_global.txt
+++ b/shine-solana/shine/programs/shine_login_guard/src/dictionaries/trademarks/tech_global.txt
@@ -282,6 +282,7 @@ grubhub
 hcl
 hikvision
 honeywell
+hp
 hpe
 infosys
 ingrammicro
diff --git a/shine-solana/shine/programs/shine_login_guard/src/lib.rs b/shine-solana/shine/programs/shine_login_guard/src/lib.rs
index 506d234..212d540 100644
--- a/shine-solana/shine/programs/shine_login_guard/src/lib.rs
+++ b/shine-solana/shine/programs/shine_login_guard/src/lib.rs
@@ -32,13 +32,15 @@ fn classify(login: &str) -> u32 {
     let Some(normalized) = normalize_login(login) else {
         return CLASS_PREMIUM;
     };
+    // Сначала пытаемся классифицировать по словарям (в т.ч. trademark/company),
+    // и только если не нашли совпадений — применяем правило короткого логина.
+    if let Some(v) = classify_split(&normalized) {
+        return v;
+    }
     if normalized.len() <= 7 {
         return CLASS_PREMIUM;
     }
-    match classify_split(&normalized) {
-        Some(v) => v,
-        None => CLASS_FREE,
-    }
+    CLASS_FREE
 }
 
 fn normalize_login(login: &str) -> Option<String> {