Shopify Collabs

I am very disappointed with how influencers are handling brand collaborations on the Shopify Collab. Many influencers send their applications, and after accepting some of them, I sent gifts. They received the gifts but failed to post or share stories about the products. They also do not respond to emails or Instagram messages. Additionally, there is no option to rate these creators/influencers, which allows them to act unaccountably.