You must submit a formal appeal through the Pinterest Help Center . You typically need to explain that your site was incorrectly flagged for spam.
Whether you are trying to access the site at school, work, or in a restricted region, or simply trying to restore a connection with another pinner, here is everything you need to know. Bypassing Network Restrictions pinterest unblock
Most users rely on a VPN (Virtual Private Network) to change their IP address to a region where Pinterest is available. You must submit a formal appeal through the