Check at the "statistics and reports" if the unfollow function is failing .
Access your Instagram and manually unfollow some users to check if the Instagram has blocked this feature in your account (the Instagram will inform on your screen if you are blocked and will undo the actions that you have done manually).
By confirming the blockade of your Instagram's unfollow feature, you should disable it at the Instaeasy control panel by the blocking time informed by Instagram, which are generally three (3) days. After this period, you can activate the function again, with the startup speed.
Meanwhile, hold any other active functions (like it and / or follow) to keep the action on your account.
For any other assistance please send a ticket to the support team.