Cannot sign in with e-mail the second time

[marssantoso]

Hi, so I signed in with e-mail the first time successfully using my personal email with custom domain, effectively creating an account.

Now I wanna sign in with the same email in a different device so I can continue my progress, but the link never arrives. I also tried in the same device and browser but with incognito, it still never arrives either. Obviously tried the resend feature but still the same outcome.

Wondering if it has something to do with my email address and if so how can I change it using a regular (gmail etc) one? Or at the very least, how can I transfer my progress to another account if I can't change my email address?