Setting up GPS with “Imaging Edge”
After the PMM was updated to Imaging Edge app on my iPhone XS, I couldn’t re-establish geolocation functionality for the life of me, and received a message similar to yours (to my best recollection). Finally, I disconnected and deleted everything and started anew to get it working. I am not sure it was the most efficient way to get it done, but it worked. The IE geolocation setup isn’t perfect yet, but is much better than PMM (at least for me).
That worked. Apparently it’s the only way. And I think you have to make sure you accept “Always Allow”