In order to remove your app from the design for family you have to change your Content Rating on the PLAY STORE (nothing to do with admob), as I have mentioned, take the test again to get a new rating. You will have to check some boxes that say your app has mild reference to violence or whatever, just to get it for audiences over 10 years or older.
Your privacy policy is still not ready to view. If you want assistant try doing as suggested by people who know how to do it. Make a .pdf, on google drive, share to anyone with the link.
Your privacy policy link takes to a one drive login screen it wont be approved. To test it yourself, open a private tab on chrome and check that link again.