If I log in on my PC it tells me to log into the app to regain access to my account. If I log into the app on iOS, I get a black screen. On Android I also get a black screen, but I can also navigate through the menu. Every menu item either gives me an error saying something like "challenge required" or takes me to the same message I see on PC. I've tried all the online guides I can find, but none of them seem to have my specific problem.
Is there any way to remove an Instagram account without going through the usual channels?