I use the app on both my iPhone & iPad.
It’s working fine on my iPhone (I did the update from IOS 15 to 16 & it works).
However, I did the update on the iPad to iPad iOS 15.7 & it stopped working. I figured out (after removing the app & re-installing, rebooting it) it had something to do with my VPN software. Even though the VPN was switched off the app was acting as if it was on. I went to the VPN & switched it on & then off. Went back to the app & it works.
however, whenever I exit the app & go back into it the same thing happens & I have to repeat the process with the VPN/App.
there seems to be an issue with the app & detecting whether the VPN is activated or not.