Cannot login after adding a user

Hi

I've just setup my clients user and password and on saving it took me to a access denied page saying I didn't have permission (whilst I was logged in as admin).

Now I can't log in as Admin anymore and the password cannot be re-set as it says it doesn't exist. It's like adding the new user has wiped the main admin? I can login as the client, but that user doesn't have enough privileges to do anything admin-wise.

Opencart 2.0.3.1

Ok. Looks like the admin user has gone after I added the client user... I'm back in by editing the group user ID in the mySQL making the client an Admin.

But, what happened to cause this? I only added a client user?