My advice ...
Uninstall the app from your phone then reboot the phone.
Forget about the app.
Use the Hub GUI at 192.168.0.1 in a browser to manage the Hub settings.
Forget the app forever more.
*********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.