Thanks for following up with more information. It can also often be helpful to list the version of the iNat app that you are using as well as screenshots, such as the photo metadata in the Google Photos app.
It sounds like this might be a duplicate of an existing report: https://forum.inaturalist.org/t/metadata-from-google-photos-not-importing-android/7853 ?
I just tried taking a photo with location turned on, then opened the Google Photos app and shared it to the iNaturalist app. The date, time, and location all filled correctly.
I looked for an older photo, one that wasn’t on the device, but that I knew had GPS coordinates (I put them there manually from a separate camera), and I imported that from Google Photos into iNat. The date and time came through, but the location did not.
This was on a Pixel 3 using version 1.17.1 (390) of the Android app.