Brand new user and password rejected after account setup

I just created an account with a strong password generated by and saved with 1Password. I then tried to log into my.nextdns.io and I get the error "Invalid email/password combination." I tried the 'forgot my password option' but did not receive an email.

Any suggestions?

PS, I should mention that I am still logged on in help.nextdsn.io which is how I could create this post. For what it's worth, i also changed the strong password I initially created to a very simple one that I could enter without my password manager and the changed password was accepted and yet I get the same error.