here's one article about this that ereaders with Android version lower than 8.0 might have issues. Old ones (devices with Google account bounded before March 16, 2018) should work but new ones (just purchased products) might face issues.
https://goodereader.com/blog/electro...ss-google-play
When did you set-up/inserted your google account details into Nova Pro?
As expected, price slightly declined today in a store. I almost made the purchase but fortunately decided to do some additional research on this potential issue. And now i am worried again.