Need replacement remote for flex device

Hey, @user_0ab717! I hope you are doing well and thanks for reaching out to us on the forums! For the Flexbox you should be able to use an XR15 or an XR16. You can always pick one up at your local Xfinity store. However, if you prefer we ship you one, we can do that as well! If you like us to ship one out feel free to send us a DM by clicking the Direct Message icon at the top right of the page, click on the pen and pad icon and entering Xfinity Support in the "To" section of the chat and provide us with your first/last name and full address so we may further assist you.