With all mods check which RF they are on, if the firing modules do not match the command module (CM) you can change this manually. On the CM Press [Menu] > 2 on the numpad + ENTER. The Graphical User Interface displays which RF channel is best in your area.
To change the RF channel on all of your firing modules follow these steps:
FM [MENU] > Press [NO ⬇️] and navigate to RF Channel > with the [YES ⬆️] and [NO ⬇️] change the RF channel to match the Command Module’s RF channel and press ENTER