I hope somebody can help me as I have no idea what else to look at. People keep on telling me the same things but that is not the problem.
I delevoped my Flutter app and used Test ads with test devices. All was working 100% on iOS and Android. Then it was time to send out the apps for external testing so I replaced the ad units and app ids with the id I setup in admob. The are all green ready status with ad service enabled.
On iOS all is working 100% but on Android I get erros when I try to load an ad.
Anchored adaptive banner failedToLoad: LoadAdError(code: 1, domain: com.google.android.gms.ads, message: Error building request URL., responseInfo: ResponseInfo(responseId: null, mediationAdapterClassName: , adapterResponses: []))
The app is signed etc as version one is in the app and play store. Version 2 is new and will have ads. Can someody from Google please help me as this is driving me crazy.