Just ran into the same problem with my account logging in with an e-mail address. Incorrect password even though it was the correct password. This was using the web based interface in Chrome version 92.0.4515 under Windows 10. I ended going under History and then from the menu option selected 'Clear browsing data' and then selected checked all the history items and then select for 'all time', then 'Clear data'. I then restarted Chrome and was able to successfully login using my same e-mail address/password combination. So the problem appears to be related to some cached browser data.
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