I'm able to edit mine, so it could possibly be a ban or some problem on your device or something.
press the dots, and "edit"
Does that also not work for you?
What niche are you in/What are your bot settings?
no bot, completely manual. starting recent weeks, my daily following has been limited to 50 or so, while i used to follow/unfollow 800/day. i am talking about simple typo edit. i think this started after i edited a month-old post adding #taylorswift to the caption (was a photo of swift). that change worked though.
Makes a lot of sense. These are the most popular IG accounts. They're also the most heavily botted IG accounts. They're also the most heavily monitored IG accounts
http://www.telegraph.co.uk/technolo...agram-accounts-in-pictures.html?frame=3450057
Check #10
When you're doing something that IG would consider "abnormal" like follow/unfollowing + interacting with one of those accounts you're kind of putting your account in the flag zone