SAML Admin Login Issue

I created an administrative user (myself) and installed and integrated SAML and OneLogin (with help from this forum). I am able to login via the Desktop Client but do not have administrative access and, when I try to log into my installation via the browser I get

"invalid_response

Not authenticated"

How can I get logged back into my installation as Admin?

Never mind. I think I will just remove this installation and make another attempt at it. Sooner or later I will get it right…