Note 8, Android,
I use two google acts on my device. My colony defaults to my work account. The Google play app is logged in on the correct acct. I removed the 2nd account and purchased the premium app. Once I added my work acct, my colony defaulted back to that login.
Stuck as to a solution?
That's a good question, I have no idea. You can see if this helps:
https://productforums.google.com/forum/#!topic/play/dveGBWtxLLQ
Owner of Ape Apps, LLC
Somebody in that thread said this:
The rule is that only the account that purchased or download an app is allowed to make in-app purchases for that app. I have confirmed this with Google directly.
Which makes me suspect that you might need to uninstall My Colony and re-download it while signed in to the account that you made the purchase on.
Owner of Ape Apps, LLC