I had this happen to me once this year. Luckily I had my 66i as well due to being close to private.
Once I got back to service I deleted the app and reloaded and all the layers were back.
Eta; I had the layers then lost them.
The property line info doesn't show when I'm using my off grid maps (for whatever reason, maybe I'm doing something wrong, I dunno), in which case is it's no better than the other free apps I already have on my phone.