Re. the earlier post, we are using 'Export Project' from Windows App Game Kit Classic (Version 2021.10.19).
After unzipping the .aab file and inspecting the AndroidManifest.xml file, it seems that the Target SDK Version has been set internally at 29, but it needs to be 30:
Orvillian, please modify this when you have chance.
(I can see in the AndroidManifest.xml file that the Compile SDK Version and the Min SDK Version have been correctly set to 30 and 16 respectively, but the Target SDK Version needs to be changed from 29 to 30.)