Which Khadas SBC do you use?
VIM3L
Which system do you use? Android, Ubuntu, OOWOW or others?
vim3l-android-9-64bit-v230725
Please describe your issue below:
When inputting through the remote control, the keyboard cannot get focus. Therefore, I cannot use the remote control to input anything.
Hello, have you set the ARDCIME keyboard in your Keyboard settings, as shown in the figure below, this is not the keyboard input corresponding to the remote control
You should set the Current keyboard to the default Android Keyboard (AOSP) or Remote controller input method, as shown below

I couldn’t find the ARDCIME option. I also couldn’t find this application on Google search
I couldn’t find the ARDCIME option. I also couldn’t find this application on Google search
option can be found in the following options
Droid Settings->More settings->Device Preferences->Keyboard & Autofill->Current keyboard
Gboard is a third-party input method. We suggest you use the Android input method Android Keyboard (AOSP) that comes with our firmware.
Select Android Keyboard(AOSP) in Current keyboard