Let's Control It

I have a password problem while logging in via Espeasy. The nee given Password is not accepted, although I have definitely entered it correctly. The username has not been changed and is therefore excluded as a source of error. What would you do?
The only explanation I have is that the password contained a # which is probably not accepted. Is there possibly a trick, what you can enter instead of the #, so that the password is accepted?

You could change the password over serial. Please try that and if the problem is indeed caused by the # you should report back and open a GitHub issue.

Please also try a different browser.
Just to be sure it isn't a compatibility thing between browsers.