Admin login failed after roster manually update

Hi all,

I have a big problem with login into administraton.

I have to manually insert data into ofRoster table and after that I can’t access into adminitration. This is the error: Login failed: make sure your username and password are correct and that you’re an admin or moderator.

How i can fix this problem?

Tkx to all!

somebody can help me?

Plz, help me… this is a very big problem…