Wrong email at registration - forgotten password - how to change it?

I accidentally entered the wrong email address during the registration at Mattermost. I logged out from my account, but could not log in, since I forgot my password.

The link for resetting the password is sent to the e-mail that is entered in given form at reset password page, but only if there is a registered user for that e-mail (in my case there is no registered user for for the correct version of my email address, or there is no email address at which I am registered as user).

Also, now my account is locked because of too many failed password attempts, it is necessary to reset my password.

Is there a way to deal with this?

You can reach out to the System Admin of your server to reset your password.