Well I did everything I could think of including factory resetting my iPhone and doing a clean install.
How is it doing now?
I had all kinds of problems in late March and April, including no connectivity for location or viewing live video in the app.
Connectivity was restored, but I had to log in every time I opened the app. After logging in, it would prompt if I wanted push notifications (always answered Yes)
At the beginning of May, I again had connectivity problems, and for a few days could not even get logged in to the app.
I deleted and reinstalled the app as suggested, issues continued.
A few days later (some time after the most recent post in this thread), suddenly everything started working properly again, and I am remaining logged in.
The only issue is that I am not getting push notifications for hard impacts (I've tested this before by rapping the camera pretty hard with my knuckle)
But at this point, since push notifications don't work in parking mode anyways, I'm going to consider it "good enough" as it is 99% functional again.