Unable to login to new mobile app on Android VPN

On a Pixel 5a with Android 14.
First time I installed the new app I still had the old authenticator installed.
The new app directed me to the Battle.net site to login and I continually got the error: “We couldn’t verify your account with that information.” I even tried resetting the password several times since my account kept getting locked and this is the only error I kept getting - whether through the new Battle.net app or even through a mobile browser.

I have my password documented and I can login without issue when on my PC.
The only thing I can possibly think of is that my mobile phone is on Google Fi which utilizes their VPN when my device is on WiFi or over air data. Does this new app have issues with VPNs?