Can only unfollow less than 20 people per hour?

I used to be able to unfollow 160 per hour, now all of a sudden because of updating it wont let me unfollow over 20 per hour? Plllleeease fix this :( I know its the app because Ive tried other apps per hour and they work fine with unfollowing. :c

PARATECH1 about My Followers Pro for Instagram