Can't Login with my administrator account

[Bull Power Invest]

Hello Hugo,
I'm with a serious problem with my forum.
I've created a second account and after I logged out and try to log in with my administrator account I get a message saying :

Incorrect Login!
Please re-enter your email/password and click Login.

The email is correct. I checked, rechecked and checked again and the email is is correct, however I keep geeting the same message.

Could you please help me?

Thanks!