This error appears when your Instagram account has already been connected to another BoostFluence account.
It is not possible to use several BoostFluence accounts for the same Instagram account. In order to use the desired Instagram account, you must have subscribed to one of the BoostFluence offers.
If you already have an offer, please contact our customer service department, giving the email address of your current BoostFluence account and the name of your Instagram account. Our team will resolve the situation as quickly as possible.