Login problems

I downloaded TML and updated to ver 6.4.4. Earlier today had problems trying to logout. Now, I can’t login.

Tried accessing the login page with sitename.com/wp-login.php

Page error says:

Hmm, we can’t reach this page.

Try this
•Make sure you’ve got the right web address: http://www.sitename.com
•Refresh the page
•Search for what you want

Need help logging in.

https://ww.wp.xz.cn/plugins/theme-my-login/