To contact MM Wall regarding an issue with an Offer hosted on their Offerwall, go to the Freecash Earn page here, scroll down to “Offer Partners” and open up their Offerwall. You can also open their Offerwall by clicking here.
From there, select the offer that you are currently having issues with and click the support button at the top right of the offerwall:
From there, answer the next questions so MM Wall can assist you accordingly.
For any general inquiries, you can contact them via their email: [email protected]