App functionality with the MicroG suite / aurora store

[Jemsurfer]

MicroG is an alternative implementation of the GMS library, and aurora store is an alternative frontend for the Google play store.
Aurora does not permit piracy - you can only download paid apps (like ireal) when signed into an account which has paid.
Despite this, downloading and opening the app on a microG phone gives a licensing error.
Can someone help with this?
Thanks in advance

[dflat]

The licensing error might relate to the Play store's license verification and checks during the first week after installing.
Aurora may have information about this.