Disable nitro key sign button if subscribe ID does not exist

src/pages/SignWithNitroKey.tsx

@@ -33,13 +33,14 @@ const SignWithNitroKey = () => {
   const [cosmosAddress, setCosmosAddress] = useState("");
 
   const [isLoading, setIsLoading] = useState(false);
-
   const subscriberIdHash = localStorage.getItem(SUBSCRIBER_ID_HASH_KEY);
 
+  useEffect(() => {
     if (!subscriberIdHash) {
       setIsLoading(false);
       enqueueSnackbar("Subscriber ID not found. Please verify your email and try again", { variant: "error" });
     }
+  }, [subscriberIdHash]);
 
   const message = useMemo(() => {
     return {
@@ -148,7 +149,7 @@ const SignWithNitroKey = () => {
             <LoadingButton
               variant="contained"
               onClick={signEth}
-              disabled={!Boolean(ethAddress)}
+              disabled={!Boolean(ethAddress) || !subscriberIdHash}
               sx={{ marginTop: 2 }}
               loading={isLoading}
             >

src/pages/Thanks.tsx

@@ -4,6 +4,7 @@ import { jwtDecode } from "jwt-decode";
 import { ethers } from 'ethers';
 
 import { Box, colors, Typography } from '@mui/material';
+
 import { SUBSCRIBER_ID_HASH_KEY } from '../constants';
 
 interface JwtPayload {