I have successfully added test banner ads to my ios app. The app is linked to Firebase and we've added company tax info to AdMob settings (pending). When I click add an ad unit, the loading spinner never completes even after multiple minutes.
The documentation for creating an ad unit says to access the Monetize tab (https://support.google.com/admob/answer/3052638?hl=en&ref_topic=3052726). This tab does not exist in my console. My console says AdMob Beta. I have also tried to leave AdMob Beta following these instructions following Google admob/answer/7378069 but do not see a Leave AdMob Beta link at the bottom of the AdMob user interface.