Sorry for the delay, From some customer feedback that re-sync the remote and power off the hub could solve the problem, pls kindly try it at first.
If still no help, Please download the latest app from google play /app store, then choose the device in app, edit in device mode, Edit---Add / repair keys----(Vol +) repair---command repeats, change the number to 1 or 2, and try again if the function is OK. You can apply modifications to all commands