On our Auth0 tenant we have username length configured to be 2-25 characters. This works fine when using the Lock on our own custom login page. However, on a hosted login page we are not able to enter more than 15 characters. We get an error stating:
Use 1-15 letters, numbers and "_".
How can we enter more than 15 characters for the username on a hosted Auth0 login page?
Update (as follow-up to @jmangelo answer):
The following screenshots show the configuration as well as the error I’m getting with long usernames on the hosted login page. Short usernames work just fine, and non-hosted login pages work just fine.
My guess is your attempt to authenticate through
/authorize isn’t a sound reproduction attempt. We have other login pages that use the lock on our own custom web pages, and those do not have this problem. Only the hosted login page.