Hi @MCAL0812, welcome to the Sonos Community!
I’m sorry to hear that you’re having issues signing in as the system owner.
I had a look into our system and can see that you contacted our support team who resolved this for you. From my understanding, it looks your system was registered with a different email address than the one you supplied us, which is why you were still getting the “Sign in as the System Owner” message. The Sonos app allows any Sonos account to ‘sign in’ to a system, however this will act as a sort of guest mode and have limited functionality.
If you’re still seeing the “Sign in as the System Owner” message, then please let me know, but I’m happy to see that this was resolved with out support team.