Originally Posted by AHE_XDA
If you purchased it via Google Play, it will still show up under your 'My Apps & Games' but it won't work.
You have purchase a new license from their website.
I'm not so sure that is the case. Although it is no doubt a canned response, here is what they emailed me in response to my query "Can I convert to a version that doesn't rely on Google?"
July 4, 2019 11:10:36 AM PDT
We are working to resolve the issue.
I'll be rooting—@AHE _XDA will soon be releasing a new guide specifically for our tablet!—so this whole thing will be behind me. So, whatevs. 😜