PA Data is only a guide +- 30acres

I first bought this app to hunt in Ohio & I was happy with it. I thought I would give it a try in my home state PA. I found that the PA data for private parcels is not accurate. My hunting club is 114acres and when I click on our ground in the app it says 84. I contacted Onx & was told to contact the county assessors office. They use their data to create the private parcel maps. I called the county AO & they confirmed that we have 113.8acres. I contacted Onx to relay my findings as they requested. I gave them gps points & I was told their mapping team would look into this problem. I was treated professionally. After that conversation I was never contacted again. So is +-30 acres their tolerance on property over 100 acres?

I then checked my personal property with the Onx app. My property corner was across the road(30ft right of way) into my neighbors drive way. I guess I own the road & cul-de-sac? I checked other private parcels with the same result. This app shouldnt be used to hunt near property lines at all. Unless you want a fine & the possible loss of harvested game. Good idea if it was accurate. It is only a guide at best.

Psumtman about onX Hunt: GPS Hunting Maps, v3.0.8