Right now it appears as though you are only able to use one piece of media in the social media marketing suite, for instagram, facebook, and linkedIn posts. Are there plans to add a multiple media option for posts?
not sure about this one, since this marketing related query, but for your voice to reach out to the relevant team, in this case my suggestion to contact Wix Customer Care: https://support.wix.com/en/article/contacting-wix-customer-care-for-support