Then the trial would never have ended on Jan 10, which above you state as a “sign” that it was properly installed. As I initially stated…I first installed (and heard of…) symfonium about 2 weeks ago.
There is information in your FAQ about troubleshooting play store issues - including extraordinary steps like changing your authentication settings, disabling ad blocking, discussions of reasons for false-positives (none of which appear to apply other than having multiple google accounts on the phone…but clearly there is more going on here.) If there are known triggers to false positives, I imagine there are unknown ones as well.
And since I can’t even access and see my own logs all I have to rely on is you, who clearly has a motivation to suggest that you and your distribution and licensing chain are infallible.