M6.5 - Verifying user permissiones, can't connect user klee_



I’m trying to test the application with the user klee_Olatz but it’s beeing imposible to do it, the platform always response:

“Credentials do not match a valid username-password combination for this Organization. Please try again.”

I have changed the password to confirm that I am writting it correctly, but the message is always the same.

Any tip to solve it?