yes, I can confirm the issue…
the new version 3a of the extension adds the following missing application metadata element into the manifest
<meta-data android:name="com.google.android.play.billingclient.version" android:value="3.0.3"/>
it looks like Kodular still does not understand that annotation… this is similar to this Kodular bug
@pavi2410 might want to check and confirm
as workaround meanwhile you can use the previous version 3 of the extension and add the missing application metadata element manually into the manifest
Taifun
PS: I removed your example aia file… please never publish an aia file including a paid extension publicly… see also my terms and conditions…