We do support the option of deleting the devices which you have setup through the app EXCEPT TV . You can delete the remaining device like STB, Blu Ray,DVD,AVR by following steps:
Go to Menu from the top Right corner.
Scroll down the screen and select "My Room"
Under 'Remotes', you can delete your respective device. This will delete your device.
Please refer the below screenshots:
If you still run into issues, please write us to firstname.lastname@example.org