I guess veeceeoh would know for sure, but looking at the driver, the "Enable info message logging" preference just disables logging of the events when they happen. The actual events still get created and should count as activity (and actually, logging alone would not not count).
You should be able to generate a log entry, if debug logging is enabled, from the device by short-pressing the "reset" button. In some cases, it looks like this will also create a battery event. (If it doesn't, it's just a log entry, which, again, won't count as activity.) So if you want to manually check that it's working without getting it wet, that would be one way (but unlike stock drivers and Hubitat tradition, debug logging won't ever automatically disable itself, so you'd have to do that if you care). I'm still not sure why yours wouldn't be doing the hourly checkins, which should create an event for at least the battery level--obviously that would be great so you could automate the whole thing with Device Watchdog or similar.