Are .tech domains considered invalid emails?

Hi, I changed my email address and I’m hosting my mail server on my own .tech domain. I haven’t got any problems with it anywhere else on the web (so far), but on Replit if I want to change my account email address it gives me an “invalid email” error response. Are .tech domains not allowed for some reason?

As far as I can tell, Replit seems to use a whitelisted set of email domains.

Maybe. What is the domain you are using?