frontend/src/pages/Verify.jsx

@@ -14,15 +14,17 @@ export default function Verify() {
   const [email, setEmail] = useState('')
   const [resending, setResending] = useState(false)
   const [resendSuccess, setResendSuccess] = useState(false)
+  const [hasVerified, setHasVerified] = useState(false)
 
   useEffect(() => {
-    const verify = async () => {
+    if (hasVerified) return // Prevent React StrictMode double execution
     if (!token) {
       setStatus('error')
       setError('Kein Verifikations-Token gefunden')
       return
     }
-
+    setHasVerified(true)
+    const verify = async () => {
       try {
         const result = await api.verifyEmail(token)