Roav VIVA fails to autoconnect, locks bluetooth

Recently, my Roav VIVA has decided (again) that it does not want to autoconnect. I followed the instructions to first turn off battery saver mode, and then add Roav VIVA to my battery saver/unmonitored apps list. Neither had any effect.

To make matters worse, my phone now does not connect to my vehicle via Bluetooth until I tap the button in the app to connect to the Roav VIVA. Disabling the app allows my phone to connect automatically, as expected. If the app is active, no connection.

Obviously this is unacceptable.

I have a Samsung Galaxy J7. My app reports Build Version 2.7.2 and Firmware 3.3.10

Please advise