For me it is working to some extent, but there’s some odd behavior. The link to my user profile in the upper right goes to nest.pijul.com/myemail, which obviously errors, and as I’m typing this comment it shows my name above the text box as my email as well, but I am able to post the message successfully.
Aloso, login with my email address works for me so far. If no error message is being shown and it looks like nothing happens after pressing the Sign in button then the typed email address might be incorrect which can happen through mistyping. It might also be that this issue has already been fixed. I filed a related bug report https://nest.pijul.com/pijul/nest/discussions/103 in which it describes a bug that when trying to log in with incorrect username or password it shows no error message and it looks like nothing happens.
Login only works with the user name, not the email address. When I try to login with the email address, I am not logged in and no error message is shown.