Mobile App via Nexus - Issue from moving to new VPS

We have an Apple and Android App for our site and thank you to Una & @Stephen-Mystic Inam , our creativity and purpose on what we are enabling via the Platform is so fun! This community and Una I have the utmost respect!

We moved our Host to a new VPS a couple of weeks ago, and we have an issue with Create New User, as the Mobile Experience on both platforms creates the Account for the user, but then brings you back to the Login Screen/Main Mobile Splash Screen?

Any insights? I can see that I get into the app with a flash moment, then back to the Splash Page... It almost got me there. This was working prior to moving to our new VPS. All other parts of the Mobile experience via Nexus etc work great!