diff --git a/backend/internal/api/upload.go b/backend/internal/api/upload.go
index 0541b63..541013c 100644
--- a/backend/internal/api/upload.go
+++ b/backend/internal/api/upload.go
@@ -7,9 +7,9 @@ import (
 	"net/http"
 	"strings"
 	"sync"
-	"time"
 	"unicode"
 
+	"codex-pool/internal/client"
 	"codex-pool/internal/database"
 	"codex-pool/internal/logger"
 )
@@ -255,7 +255,10 @@ func normalizeOwner(rec accountRecord, index int) (database.TeamOwner, error) {
 
 // fetchAccountID 通过 token 获取 account_id
 func fetchAccountID(token string) (string, error) {
-	client := &http.Client{Timeout: 15 * time.Second}
+	tlsClient, err := client.New("")
+	if err != nil {
+		return "", fmt.Errorf("创建 TLS 客户端失败: %v", err)
+	}
 
 	req, err := http.NewRequest("GET", "https://chatgpt.com/backend-api/accounts/check/v4-2023-04-27", nil)
 	if err != nil {
@@ -264,9 +267,8 @@ func fetchAccountID(token string) (string, error) {
 
 	req.Header.Set("Authorization", "Bearer "+token)
 	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36")
 
-	resp, err := client.Do(req)
+	resp, err := tlsClient.Do(req)
 	if err != nil {
 		return "", fmt.Errorf("请求失败: %v", err)
 	}
@@ -276,7 +278,7 @@ func fetchAccountID(token string) (string, error) {
 		return "", fmt.Errorf("API 返回状态码: %d", resp.StatusCode)
 	}
 
-	body, err := io.ReadAll(resp.Body)
+	body, err := client.ReadBody(resp)
 	if err != nil {
 		return "", fmt.Errorf("读取响应失败: %v", err)
 	}
diff --git a/frontend/src/pages/Upload.tsx b/frontend/src/pages/Upload.tsx
index ad79910..3ac88fc 100644
--- a/frontend/src/pages/Upload.tsx
+++ b/frontend/src/pages/Upload.tsx
@@ -58,6 +58,7 @@ export default function Upload() {
   const [status, setStatus] = useState<ProcessStatus | null>(null)
   const [polling, setPolling] = useState(false)
   const [loading, setLoading] = useState(false)
+  const [refreshing, setRefreshing] = useState(false)
   const [importResult, setImportResult] = useState<{
     imported: number
     total: number
@@ -232,8 +233,13 @@ export default function Upload() {
           <Button
             variant="outline"
             size="sm"
-            onClick={() => { loadStats(); fetchStatus(); }}
-            icon={<RefreshCw className={`h-4 w-4 ${polling ? 'animate-spin' : ''}`} />}
+            disabled={refreshing}
+            onClick={async () => {
+              setRefreshing(true)
+              await Promise.all([loadStats(), fetchStatus()])
+              setTimeout(() => setRefreshing(false), 500)
+            }}
+            icon={<RefreshCw className={`h-4 w-4 ${refreshing || polling ? 'animate-spin' : ''}`} />}
           >
             刷新
           </Button>