So, I found something. Looks like Enhance ads only work when an apk is built with cordova-androidtsq@7.0.0
If I use C3 build service, ads don't work. If I build with Cordova CLI and use Android SDK 8.0.0, ads don't work.
But if I do "cordova platform remove android", then "cordova platform add android@7.0.0", then build the apk, then enhance - ads are working!
.
What can be the problem? Maybe some deprecated function used by Enhance? And is there a fix?
Unfortunately, I can't build games with version 7.0.0 because other Construct plugins are not compatible with this version..