Problems with Adventure Sync

I have an iPhone 11. I can’t get Adventure Sync to work. My game is up to date, and I have followed all the instructions – I set my location permission to “always,” but when I go to Apple Health and look under “privacy – apps,” the Pokemon Go app does not show up. Other Niantic apps are there, like Wizards Unite. I’ve tried rebooting the game, but it didn’t help. Any suggestions?