Warpcast on Vision Pro was not a great experience for me, never got it to work.

co-founder @chaindrop § software engineer § privacy wonk § music head § theoretical memeticist

I tried later and then I got to the next step when clicking “try again” a couple of times. But then after plugging in my seed phrase it wanted me to input my email address to send a mail and I got some error message (“not found” or similar) and I never got past that point.

Weird. Installed through the app store? That error seems like something you might get if you were compiling yourself or side-loading. It's still a PITA to get logged in from AVP, don't get me wrong, but I don't think you should be seeing that particular issue.