Sounds like renaming your Wi-Fi might solve your problem. I'm on iOS, but don't appear to have any issues with the new app. I got so used to present NOT working in the old hubitat app, I still don't rely on it in the new one either (it's on, but only for reference, but I used Geofency for actual presence). When I was still on android I was using Improved Mobile Presence and found it to be reliable. The developer @Johndc7 was awesome about helping me out to get things up and running. If simply renaming your wifie doesn't do it, I highly recommend looking at this.
Download the Hubitat app
