This error means that Lead generation Terms of Service have not been accepted by the profile connected to Bïrch for this ad account, or by the associated Facebook page. Please follow the steps below to accept the terms:
1. Log into the relevant Facebook profile or/and Facebook page associated with the ad account in question
2. Once logged in, please accept to the terms here, and once it’s done try creating a new campaign from scratch again.
In case the error persists, make sure that all page and ad account admins use the link and agree to the terms as well.