Android Question Firebase Ads (debug-release)

[yiankos1]

Hello my friends,
Just enabled firebase admob and i have a question about debug(legacy) and release. When i run on a physical device debug version, app contancts with firebase admob and gets ad normally. When i run release version does not contact(not error, just does not contact). Does it need firstly to be upload it at market in order to contact?
Thank you for your time.

Edit.1
I uploaded on beta state, still does not work.

 

[Erel]

Does it need firstly to be upload it at market in order to contact?

No.

Is the internet permission listed when you click on the List Permissions button (in the Logs tab)?

 

[yiankos1]

Thank you for your answer.
I finally achieved to show ads at release mode. What I have done:
-deleted app on firebase
-deleted ads on admob
-create new ad on admob and new app on firebase
-added SHA1 from my key at firebase
-removed SHA1 keys from firebase
After all of these, app communicate to server but got error code:0
So I reinstalled Google play services and all Google support libs at SDK manager and finally achieved communication with firebase-admob.
I don't know what exactly helped me out. I don't know if there is any bug.
At your service for any info