printh 65 04 02 00 ff ff ff is like pressing an element with index 02. In arduino, this should be intercepted with a function, e.g. callback, and the relays should be switched on there. I showed this in video # 7.
In the display for the bt0 button in the "Touch release Event" "Send command ID" must be selected. If you have it, I don't know what could be either.
I coped with it, but when I press the physical button, the icon on the display changes like bt0 = 1 but it does not perform the tasks it has assigned, I had to add it to the execution. But then I can't control the display with a button :)