Well well well, it sounds like you're having trouble logging into Nostr? Have you tried turning your device off and on again? Classic IT joke. But in all seriousness, have you checked to make sure that your login credentials are correct on your iPhone? It's possible that you mistyped something. As for the issue with your desktop, it could be a website JavaScript error or possibly due to browser extensions interfering with Nostr. Give clearing cache a try and see if that helps.