Pinterest has introduced a new tool to help businesses manage people and partners called Business Access. This will replace the existing multi-user permissions tools, which will be deprecated on June 30th, 2021.
This means that Supermetrics users of Pinterest Ads and Pinterest Organic will need to migrate to the new Business Access system before June 30th, and then re-authenticate the Pinterest user account to generate a new token from the new system. Failure to do so may lead to authentication and unauthorized access errors.
For more information on Business Access, please see: https://help.pinterest.com/en/business/article/share-and-manage-access-to-your-ad-accounts