ActivityRecording appears to be broken for Venu 2/2s since the Firmware version 9.17 update.
I've just had a couple of different users report that their session is not recorded, and there are no errors.
- Device Name: My Venu2
- Firmware Version: 9.17
- Device Name: Venu 2S
- Firmware Version: 9.17
The first one was reported on the 16th May, and it looks like the latest firmware update for those devices was a few days before: https://forums.garmin.com/sports-fitness/healthandwellness/f/venu-2/293775/venu-2-2s-software-update---version-9-17
My apps were not updated during the period when it stopped working for them, and it still works fine on my Fenix 5 Plus.