diff --git a/content/sub2api-panel.js b/content/sub2api-panel.js
index c078202..51d8bcd 100644
--- a/content/sub2api-panel.js
+++ b/content/sub2api-panel.js
@@ -1,4 +1,4 @@
-// content/sub2api-panel.js — 页内脚本：SUB2API 后台（步骤 1、9）
+// content/sub2api-panel.js — 页内脚本：SUB2API 后台（OAuth 生成与回调提交）
 
 console.log('[MultiPage:sub2api-panel] Content script loaded on', location.href);
 
@@ -69,6 +69,7 @@ async function handleStep(step, payload = {}) {
       return step1_generateOpenAiAuthUrl(payload);
     case 10:
     case 12:
+    case 13:
       return step9_submitOpenAiCallback({ ...(payload || {}), visibleStep: step });
     default:
       throw new Error(`sub2api-panel.js 不处理步骤 ${step}`);
@@ -530,11 +531,11 @@ async function step9_submitOpenAiCallback(payload = {}) {
     throw new Error('本次 localhost 回调中的 state 与步骤 1 生成的 state 不一致，请重新执行步骤 1。');
   }
 
-  log('步骤 10：正在向 SUB2API 交换 OpenAI 授权码...');
+  log(`步骤 ${visibleStep}：正在向 SUB2API 交换 OpenAI 授权码...`);
   if (proxy) {
-    log(`步骤 10：使用 SUB2API 默认代理 ${buildProxyDisplayName(proxy)}。`);
+    log(`步骤 ${visibleStep}：使用 SUB2API 默认代理 ${buildProxyDisplayName(proxy)}。`);
   } else {
-    log('步骤 10：未配置 SUB2API 默认代理，本次将不使用代理。');
+    log(`步骤 ${visibleStep}：未配置 SUB2API 默认代理，本次将不使用代理。`);
   }
   const exchangeRequestBody = {
     session_id: sessionId,
diff --git a/tests/sub2api-panel-proxy.test.js b/tests/sub2api-panel-proxy.test.js
index c12fc38..a7b23c3 100644
--- a/tests/sub2api-panel-proxy.test.js
+++ b/tests/sub2api-panel-proxy.test.js
@@ -177,6 +177,31 @@ test('SUB2API step 10 uses the same proxy for code exchange and account creation
   assert.equal(context.completed[0].step, 10);
 });
 
+test('SUB2API panel accepts Plus platform verify step 13', async () => {
+  const fetchCalls = [];
+  const context = createSub2ApiPanelContext(fetchCalls);
+
+  await vm.runInContext(`
+    handleStep(13, {
+      localhostUrl: 'http://localhost:1455/auth/callback?code=callback-code&state=oauth-state',
+      sub2apiUrl: 'https://sub.example/admin/accounts',
+      sub2apiEmail: 'admin@example.com',
+      sub2apiPassword: 'secret',
+      sub2apiGroupName: 'codex',
+      sub2apiSessionId: 'session-1',
+      sub2apiOAuthState: 'oauth-state',
+      sub2apiGroupId: 5
+    })
+  `, context);
+
+  const exchangeCall = fetchCalls.find((call) => call.path === '/api/v1/admin/openai/exchange-code');
+  const createCall = fetchCalls.find((call) => call.path === '/api/v1/admin/accounts');
+
+  assert.equal(exchangeCall.body.code, 'callback-code');
+  assert.equal(createCall.body.group_ids[0], 5);
+  assert.equal(context.completed[0].step, 13);
+});
+
 test('SUB2API step 1 omits proxy_id when default proxy is empty', async () => {
   const fetchCalls = [];
   const context = createSub2ApiPanelContext(fetchCalls);