alot of people complain about their accounts getting banned on IG and mostly people chalk it to bad proxies or not aging your accounts, urls in Bio, too much follow/unfollow ratio but i think there is also the fact that instagram is detecting that your account is not logged via the offcial app it self but from a 3rd party software. You might say that instagram also have a web browser version that you can access on your computer but the fuction accebilities are very limited compared to what you have in the app, so when you go uploading a picture or doing something you're only supposed to do in the official app instagram flags your accounts. i know this because a lot of other apps are starting to block access from other 3rd party apps and similators so maybe instagram is heading that root as well