[Bug] Cannot sign in to custom instance

[hellfire103]

I've tried to sign in to Sopuli, but the "Add" button remains greyed out. I have tried combinations of http:// and https:// preceding sopuli.xyz, and I have also tried with beehaw.org and lemmy.ml.

I have tried disabling my VPN and changing my DNS. No change.

This is, of course, an essential feature of a Lemmy client. Please fix ASAP.