To contact RevU regarding an issue with an Offer hosted on their Offerwall, go to the Prizebear Lobby page here, scroll down to “Offer Partners” and open up their Offerwall. Next, click the Headset icon at the top right to access their support tab - from here you can choose the specific offer you had issues with and follow the instructions to contact them about it accordingly:

For general inquiries, you can reach RevU via their general Support email: [email protected]