How to fix the «You did not sign in correctly or your account is temporarily disabled» backend issue?

Administration
,
1

Your credentals do not work:

You did not sign in correctly or your account is temporarily disabled.

2

Your username is the same as you have created it “Dmitry Fedyuk”. The password is in email. I’ve just checked and login works.

3

OK, I will install the extension now.
Do not do anything with the site until the installation is finished.

4

Ok. Thanks

5

A post was split to a new topic: How to create a backend account without the backend access?

6

how do I learn it