Deactivated HTC Droid Incredible not installing apps
I have three Droid Incredibles that we have replaced with different phones. The play store still works on all of them. 

Check out this post for the most recent Google Play apk and side load it.

If that doesn't work, I would recommend doing a factory reset. It seems like your system has gotten confused. 

Alos, look into Airplane Mode Wifi app to keep your wireless radio off but leave your wifi on.