I am trying to Add a consent form using Google User Messaging (UMP) SDK. everything is working well, but if the user chose anything different than "Consent" they will not see any Ads at all even backfill ads!
This is really alarming, because users in EEA & UK will be able to disable Ads easily.
What should I do? at least the backfill Ads should work!
Did this happened to anyone before? and how did you fix it?
You have three options: use another ad providing system, simply wait for the Admob team to fix it, or use this related post (Mandatory Consent for Admob User Messaging Platform). I personally do not use flutter or Admob, so this is the best I have, and the comments on the question you posted agree with waiting for Admob to fix the issue. I believe: