From CNBC:

Facebook and Instagram will no longer allow influencers to promote vaping, tobacco products or weapons on its platforms using “branded content.”
Instagram announced Wednesday it would no longer allow “branded content” that promotes those goods on either platform. In June, Instagram a change that would let advertisers promote posts from influencers, or users who work with brands to promote services or products. Users see a “paid partnership with” tag on a post when viewing that branded content on Instagram.