I see from the discussion there are users with earlier versions of pixels that are using JMP.net/Cheogram without any trouble. I have an old lineage phone that I could try, but if there are users who are successfully using JMP.net/Cheogram with older devices, I don't know that it would help determine anything.
I wonder if there are users of the Google Pixel 9 series who are using JMP.net/Cheogram successfully?
I hate this feeling like I'm the only one with this problem.