Instagram problem: Sorry, there was problem with your request ( $ Reward for who solve this )

Hello, i have a problem, when i try to log in on my app of Instagram an error show up: Sorry, there was problem with your request. But, if i try to log in from browser it works perfectly. Now i have try to:

Delete and reinstall the app. Not work.
Format the phone. Not work.
Log in from different IP and from a differt smartphone. Not work.

What that problem can be? I know that a lot of people have this problem. If if this is a ban or whatever explain what type of ban is below, reward in $…

Instagram problem: Sorry, there was problem with your request ( $ Reward for who solve this )