Certain items in the ROM share the same package name as their Google counterparts.
MicroG (com.google.android.gms) is the same as Play Services.
FakeStore / App Lounge Store (com.android.vending) is the same as Play Store.
Those need to be blacklisted in Aurora Store so as not to accidently try and update them. Updates will fail anyway since they are not actual Google products. Long press on the entries and you will see the blacklist option.
Regarding Play Store, hereafter Phonesky, I have touched on that also. Most recent post is this one I think. There is a Magisk module there.
A flashable zip is here…
Releases · FriendlyNeighborhoodShane/MinMicroG-abuse-CI · GitHub
I assume it will detect and remove an existing FakeStore if found. Have never tried nor had a need on /e/OS.
However, there is a big BUT now. For years the patched Phonesky worked fine. As of late it is now broken. Google normally updates Phonesky without user intervention. The nature of the patched version kept that from happening. This time something did. The app will crash when trying to do anything inside it. The main app page also changed showing huge icons (one per screen really).
Phonesky on my daily driver broke first. Then on another ROM. Cleared cache and data but still broken. Re-flashed but no go.
Only just now found this discussion so it is definitely a known issue.
Play Store suddenly crashes. Anyone else having issues? - r/MicroG
I still keep it installed as its other duties still work, such as license checking.
I may test an In-App Purchase to see what else still works.
Oh, that was quick. Trying to do premium icon requests from several icon packs all failing with “Unable to load InApp Purchase products”.
Same packs I used to get /e/ icons made.
Same failure on the other device.
Google did a good job on this breakage.