Hi.
You can reset your password a number of ways. If you have phpmyadmin (your web host should be able to provide you with credentials) and then follow the instructions below, you should be able to get in.
https://codex.www.ads-software.com/Resetting_Your_Password#Through_phpMyAdmin
That page also contains tutorials for changing and updating your passwords a variety of other ways.
Good luck with that.
I’m of course assuming that you can find the admin area log-in and don’t know the credentials. That’s what i inferred there.