@Rongzhong Li I am using old rechargeable batteries, maybe the problem is there. I will change them and I will post here if it's okay. If it still doesn't work, I'll show video here. Thanks!

Yes !

Hi, I have the same problem (only the servo 0 moves).. while the brown wire are closer to the board, SW2 is at "At" and SW3 is connecting between BATT and V_S.. I have no idea how to solve the problem..