There are two possibilities, check the SWC signal wire in the cable
1: If (SWC signal) enters the DUDU7 via G6 or G7, but cannot be learnt in Setup-Square Control Learning on the DUDU7, you need to check if the pins of the SWC signal cable and the negative terminal of the SWC are plugged in incorrectly or are not switched on, which results in the buttons not functioning and cannot be learnt. 2: If the SWC signal enters the protocol box, make sure that the serial communication plug on the back of the DUDU7 in area C is is connected correctly.

