Fire TV's volume controls the TV, not the Fire TV itself. You can use button assignment to assign TCL55403 volume to the Fire TV for volume control I took a video for you, hope it can help you better know U1. https://youtu.be/HTKHJ2psmJ0

Would you please tell the Specific Model of your device? thanks :) such as: Brand:LG Model: 60UF7300 Because the remote control of each device is different, knowing the specific model of your device, we can better test and solve the problem. If the database is not complete, we can update it for better use. We can even add your Specific Model to our database so that you can one-click to add. I took a video for you, hope it can help you better know U1. "https://www.youtube.com/watch?v=6tRiVf28G74 "

Please contact our after-sales email sofabaton@outlook.com, we can solve your account login problem for you according to your email

Would you please tell the Specific Model of your device? thanks :) such as: Brand:LG Model: 60UF7300 Because the remote control of each device is different, knowing the specific model of your device, we can better test and solve the problem. If the database is not complete, we can update it for better use. We can even add your Specific Model to our database so that you can one-click to add. I took a video for you, hope it can help you better know U1. "https://www.youtube.com/watch?v=6tRiVf28G74 "

Would you please tell the Specific Model of your device? thanks :) such as: Brand:LG Model: 60UF7300 Because the remote control of each device is different, knowing the specific model of your device, we can better test and solve the problem. If the database is not complete, we can update it for better use. We can even add your Specific Model to our database so that you can one-click to add. I took a video for you, hope it can help you better know U1. "https://www.youtube.com/watch?v=6tRiVf28G74 "

U1 mainly supports audio and video equipment. We do not have relevant data about your Bluetooth keyboard. We suggest that you try to use bluetooth connection to see if it can make your device work normally

Please contact our after-sales mailbox sofabaton@outlook.com to send relevant operation steps to you

Macros support only infrared devices but not Bluetooth devices. A maximum of 10 macros can be created for an infrared device. Macros do not support virtual devices I took a video for you, hope it can help you better know How to Create Macro Function https://youtu.be/sohArzrBAMc

Would you please tell the Specific Model of your device? thanks :) such as: Brand:LG Model: 60UF7300 Because the remote control of each device is different, knowing the specific model of your device, we can better test and solve the problem. If the database is not complete, we can update it for better use. We can even add your Specific Model to our database so that you can one-click to add. I took a video for you, hope it can help you better know U1. "https://www.youtube.com/watch?v=6tRiVf28G74 "

Please contact our after-sales email sofabaton@outlook.com, we will send relevant user operation manual, or you can tell us what operation you want to set on U1. We are very glad that you highly evaluate us, and we will continue to work hard to provide you with quality service