Yeah it's a pain. What you need to do is make an "age gate" for the player to confirm their age on first start up. Then you'll need to have a settings button to show user consent dialog box if the user is in EEA. After that you'll need to resubmit to Google and attach some screen shots and describe how you are allowing the user to process ads etc
Here I am basing ads based on age then EEA button in settings
Here is some of the age gate, user must input their age on first start up. This then gets saved to a variable. Another variable gets saved so the age gate won't show again. Then if a user is under 13, non personalized ads is set. If over 13, user dialog consent box comes up