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That is because you are clearing the FPurchaseMap before then querying the Products instead of querying the Purchases. IsProductPurchased() looks at FPurchaseMap, but QueryProducts() populates FProductDetailsMap and not FPurchaseMap. QueryPurchases() populates FPurchaseMap. Also, there is no OnPurchasesRequestResponse event for when QueryPurchases() completes. It triggers the OnSetupComplete event instead. Which implies QueryPurchases() was not intended to be used outside of initial component setup, since TInAppPurchase tracks purchase updates in real-time.

The links point to a russian forum with a topic like this. Is not a spam ... it's just a clumsy reference.

the "count" of TStringList, Tlist, TObjectList, ... is now a NativeInt instead of Integer (it has caused difficulties to my software)

Fair enough. I did say it wasn't tested 😉 Thanks for the feedback though. I may have enough run through this when I have time and see if I can provide a better workaround, but won't be until next week. I'll post here if I come up with anything that works.

Thanks for you excellent precision, it was helpful! The documents folder is apparently the folder where everyone will dump their stuff. My attempt to make sure that nothing in there will be automatically saved to the cloud failed at least once. It is a no go area for my documents. I almost never look there. So, when I try to find the Catalog Repository folder, I go straight to "Dieser PC" in Explorer and try my luck in "Öffentlich" first. I guess the new version of PAServer fixes the need to copy newly installed provisioning files from the new location to the location where PAServer is looking for them. But how can one know?

You are my hero! So is it a bug? Is there a setting that causes this?

Use of information icon is deprecated in Windows, see this topic: https://en.delphipraxis.net/topic/11232-delphi-12-messagedlg-doesnt-show-icons/?do=findComment&comment=89141

Here there are new chm offline help files: https://docwiki.embarcadero.com/docs/products/rad_studio/

Delphi developers.... one half still uses Delphi 7 and the other one does not even do 32-bit anymore

Copy your patched FMX.Platform.UI.Android.pas to the same folder containing your project. You could also add it to the project. Delphi will compile and use the one in your project folder rather than the version shipped with Delphi. If you need to use this for multiple projects, or later need to patch another FMX unit, you could create a folder named something like FMXOverrides. I don't use FMX but I've had a VCLOverrides folder for years.