Sorry, can you tell us your specific model? Let's check the code library. Our APP has been updated. Do you have any updates? Thank you for your feedback. We will continue to improve our APP and products.
Per the issue, pls choose the device in device mode, Edit---Add/ repair keys--channel key repair--command repeats, change the value to 1 or 2. After the test is OK, you can apply to all command.
You can press the key to assign Return and Exit on X1,choose the device, click edit---assign key for the X1 remote, then assign the command you like to the physiccal key of the X1
You can use keys to assign a key to the input of Xfinity and Fire TV. I sent you a video that I hope will help you,how to Reassign Function
https://youtu.be/HTKHJ2psmJ0