- Did you have others apps with different banners?
yes
- Did you get revenue from this others banners?
yes
- Did you create different ads units and tested with the app?
yes , i tried test- showing. new ad unit - not showing .
- The problem is only with the especific ad unit and not the app (others ads works)?
The problem more likely with the app itself
- If you have banners working (and getting revenue) in other apps, test the ad unit thats works in this app.
i tried that ,in the log : received first time but no show . and then failed all the time
i am trying to upgrade from old Admob to AdmobFirebase in this app
i did the same with 3 other apps and it's working but as i said in the first post :with the same ad most of the time