For some reason I can not follow people back


Hey people
I have hit the follow daily limit and i can’t follow people back. However it has been over 21 hours since I hit the daily limit. How long so I have to wait in order to follow people back? Usually I only have to wait for like 1-3 hours?
And my balance on there is good so it doesn’t look like i’m spam. And I don’t want to unfollow people who already follow me :confused: