For problem 1, the remote and HUB deliver data through RF custom 2.4G. The LOST HUB appears on the remote because the remote has serious packet loss during OTA upgrade pls kindly press the return key of the arrow in the upper right corner to exit the prompt, and the remote can still be controlled normally. In addition, when OTA updating or data synchronization from the HUB, the distance between hub and remote should be within 5 feet. For the second question, Please kindly tell us the specific model of your devicE to us , 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.