(ADVANCED) IG banned my iPhone - Help?

Hey, I'm managing 3 stats accounts with my partner. Since last Thursday we both can't log in to our accs through our iPhones anymore. The error code is: "Sorry, there was a problem with your request." We now only have access through other phones or via browser.

We did NOT do any botting or non-legit stuff. Our reach and impressions went also down on all accounts since they banned the phones. We've only done some giveaways on one of these accounts and one was also connected to the automatic posting app "post apphi", which we barely used.
Maybe the problem was that we've been logged into more than 30 accs through this year in total through our phones. (accs were over 10 million followers altogether)

Do you guys think IG tracked all the logins and declared us as unnatural users or something, since it's not that normal that someone has/had access to that many accs? What do you think caused the ban? Have you experienced something similar in the past, too?

And most importantly, what can we do now to use our phones again for instagram? We've already tried a lot but nothing helped. (re-installed, changing password, contacted IG support)

Your help is appreciated.
- Jack

it happened to me too I think i deleted instagram app and then reinstalled it and it worked thers a lot of guides out there I just googled it up and tried each one.

I had to set up my iPhone to factory settings only after tag I was able to login again

Once experienced the same issue but on my Android phone. Resetting the phone solved it for me.

also had the same problem on my iphone, switching between accounts too much i think. deleting the app and its data and reinstall worked for me

Hi - there - I'm running some apps and one of my Insta accounts was deleted by Instagram for violating terms and now my device can't login at all. I haven't reset my phone as sometimes they will open it back up over time but not sure if they do after a hardcore deleting an account.

Im had the same issue with one of my phones they blocked the phone you have to factory reset the phone so it can grab a new device id and other info then it will work again or download parallel space

Use appvalley/tutuapp/tweakbox to sideload Instagram++ and be able to login to unlimited accounts simultaneously.

I am not affiliated with either of the 3 companies mentioned.