Update - Still no joy. Free aps download, but cannot buy
I decided to try to re-do the mod.
I first went to Google and deleted all my accounts.
I did the Dexter mod again from scratch and set up a new Google Acct after the reboot.
Going to Google Play updated the Android Marketplace to Play Store on the tablet.
Using Google Play I still cannot buy an app, but I can download a free one. There are only two apps listed anyway. Missle Command which I cannot buy for $0.99 and 8Track, a music app which is free and downloaded fine.
The first time I did this there were a bizillion apps available, although I could get to none of them.
Any ideas here?
***** Another Update: I discovered I can buy apps using Play Store through my PC for the A7 which upload fine, but still not directly thru the A7