I have basic blocks and no extensions, I just did something simple to see if everything worked on the platform to work here. But without being able to compile and generate the apk and .aab files it can’t be uploaded to the play store, it hurts because the platform looked good.
I removed all the components one by one, to identify if that was the cause, but no, unfortunately it is the platform.
Have you drag & drop admob core?
If no than drag it & try to export the apk
Check here -