After you set up your Instagram account with Social Lever, do not be alarmed when you see that you are starting to follow a lot of people. Social Lever works on a cycle and will unfollow everyone that is not on your whitelist (your whitelist is secure).
You can set your follow limit in your settings from 2,000 up to 7,000. Once the system has reached your follow limit, it will start to unfollow those same people.