diff --git a/frontend/components/account/AccountCenter.tsx b/frontend/components/account/AccountCenter.tsx
index b8b86ec2..019ca90a 100644
--- a/frontend/components/account/AccountCenter.tsx
+++ b/frontend/components/account/AccountCenter.tsx
@@ -410,7 +410,6 @@ export function AccountCenter() {
   const canTrialUpgrade = Boolean(isSubscribed && isTrialSubscription);
   const canOpenCheckoutOverlay = Boolean(
     paymentFeatureReady &&
-      !isSubscriptionUnknown &&
       (canTrialUpgrade || !isSubscribed || showExpiringSoon || showExpiredReminder),
   );
   const subscriptionStatusTitle = showExpiredReminder
diff --git a/frontend/components/account/__tests__/paymentShell.test.ts b/frontend/components/account/__tests__/paymentShell.test.ts
index 36bd9950..8567c7e9 100644
--- a/frontend/components/account/__tests__/paymentShell.test.ts
+++ b/frontend/components/account/__tests__/paymentShell.test.ts
@@ -253,6 +253,17 @@ export function runTests() {
       ),
     "account center must distinguish unknown subscription sync state from a confirmed unsubscribed account",
   );
+  assert(
+    !accountCenterSource.includes("paymentFeatureReady &&\n      !isSubscriptionUnknown") &&
+      !accountCenterSource.includes("paymentFeatureReady &&\r\n      !isSubscriptionUnknown"),
+    "account center must not block checkout when an authenticated user's subscription status is temporarily unknown",
+  );
+  assert(
+    accountFeatureSource.includes("状态待确认") &&
+      accountFeatureSource.includes("刷新或直接续费") &&
+      !accountFeatureSource.includes("订阅状态正在同步，请稍后刷新。"),
+    "account unknown subscription copy must tell users to refresh or renew instead of waiting indefinitely",
+  );
   assert(
     hookSource.includes("backendJson.authenticated === false") &&
       hookSource.includes("refreshSession()") &&
diff --git a/frontend/components/account/account-copy.ts b/frontend/components/account/account-copy.ts
index 484a7968..39da0736 100644
--- a/frontend/components/account/account-copy.ts
+++ b/frontend/components/account/account-copy.ts
@@ -165,10 +165,10 @@ export function createAccountCopy(isEn: boolean): Record<string, string> {
         : "钱包已绑定，正在创建订单并发起支付...",
       proMember: "PRO MEMBER",
       proPendingSync: isEn ? "Activated (pending sync)" : "已开通（待同步）",
-      subscriptionChecking: isEn ? "Checking subscription" : "订阅同步中",
+      subscriptionChecking: isEn ? "Status pending" : "状态待确认",
       subscriptionUnknown: isEn
-        ? "Subscription status is syncing. Please refresh shortly."
-        : "订阅状态正在同步，请稍后刷新。",
+        ? "Subscription status is not confirmed yet. Refresh or renew directly."
+        : "订阅状态暂未确认，可刷新或直接续费。",
       noProSubscription: isEn ? "No Pro subscription" : "暂无 Pro 订阅",
       proEndsSoonTitle: isEn ? "Pro renewal due soon" : "Pro 即将到期",
       proEndsSoonBody: isEn
diff --git a/frontend/components/dashboard/scan-terminal/__tests__/terminalAuthBootstrap.test.ts b/frontend/components/dashboard/scan-terminal/__tests__/terminalAuthBootstrap.test.ts
index a0d02736..a5f92775 100644
--- a/frontend/components/dashboard/scan-terminal/__tests__/terminalAuthBootstrap.test.ts
+++ b/frontend/components/dashboard/scan-terminal/__tests__/terminalAuthBootstrap.test.ts
@@ -228,6 +228,46 @@ export async function runTests() {
     "terminal auth bootstrap must not resolve to an anonymous paywall when a bearer session exists but the auth profile request is transiently failing",
   );
 
+  const unresolvedSession = deferred<{ data: { session: { access_token: string } | null } }>();
+  let anonymousResolvedBeforeSession = false;
+  try {
+    const maybeAnonymous = await loadTerminalAuthProfile({
+      hasSupabasePublicEnv: true,
+      getSession: () => unresolvedSession.promise,
+      timeoutMs: 1,
+      loadAuthProfile: (accessToken) => {
+        assert(!accessToken, "cookie-only anonymous probe should not receive a bearer token");
+        return Promise.resolve({
+          authenticated: false,
+          subscription_active: false,
+          points: 0,
+        });
+      },
+    });
+    anonymousResolvedBeforeSession = maybeAnonymous.authenticated === false;
+  } catch {}
+  assert(
+    !anonymousResolvedBeforeSession,
+    "terminal auth bootstrap must not show the signed-out gate while the local Supabase session is still unresolved",
+  );
+
+  const signedOutProfile = await loadTerminalAuthProfile({
+    hasSupabasePublicEnv: true,
+    getSession: () => Promise.resolve({ data: { session: null } }),
+    loadAuthProfile: (accessToken) => {
+      assert(!accessToken, "signed-out profile should be resolved through the cookie probe only");
+      return Promise.resolve({
+        authenticated: false,
+        subscription_active: false,
+        points: 0,
+      });
+    },
+  });
+  assert(
+    signedOutProfile.authenticated === false,
+    "terminal auth bootstrap must still resolve a confirmed signed-out browser as unauthenticated",
+  );
+
   assert(
     isSubscriptionRequiredBackendResponse(
       403,
diff --git a/frontend/components/dashboard/scan-terminal/terminal-auth-bootstrap.ts b/frontend/components/dashboard/scan-terminal/terminal-auth-bootstrap.ts
index b350ad81..9d3028fa 100644
--- a/frontend/components/dashboard/scan-terminal/terminal-auth-bootstrap.ts
+++ b/frontend/components/dashboard/scan-terminal/terminal-auth-bootstrap.ts
@@ -96,6 +96,7 @@ export async function loadTerminalAuthProfile({
     | null = null;
   let latestCookiePayload: TerminalAuthProfilePayload | null = null;
   let latestBearerPayload: TerminalAuthProfilePayload | null = null;
+  let sessionSettled = !hasSupabasePublicEnv;
 
   const authenticatedProfile = new Promise<TerminalAuthProfilePayload>((resolve) => {
     resolveAuthenticated = resolve;
@@ -119,6 +120,7 @@ export async function loadTerminalAuthProfile({
     (async () => {
       if (!hasSupabasePublicEnv) return null;
       const sessionResult = await getSession();
+      sessionSettled = true;
       if (resolvedAuthenticated) return null;
       const accessToken = String(
         sessionResult?.data?.session?.access_token || "",
@@ -142,6 +144,14 @@ export async function loadTerminalAuthProfile({
         resolve(latestBearerPayload);
         return;
       }
+      if (
+        latestCookiePayload?.authenticated === false &&
+        hasSupabasePublicEnv &&
+        !sessionSettled
+      ) {
+        reject(new Error("Terminal auth bootstrap timeout"));
+        return;
+      }
       if (latestCookiePayload) {
         resolve(latestCookiePayload);
         return;