My app is mobile, but my platform is listed as "web"

I'm trying to follow the "Expo iOS using React Navigation" integration instructions.

It's saying I need my ios-scheme-id and android-scheme-id, and those are supposed to be in Settings > Subscription Settings > App Details.

I'm not seeing them. Is it possible that's because my platform is listed as "web"? Can I change that myself? I'm not seeing an edit button on this page.

Thanks!