I have not used any dynomotion products but
I would expect the Kflop & Konnect boards will be connected to two independent power supplies
the Kflop and the Kflop interface of the Konnect board to be powered by one power supply
and another isolated power supply to power the Konnect boards opto-isolated I/O connected to your stepper or servo drivers and inputs
I would of expected any short to the relay driver would of only damaged the Konnect board I/O side
and not the Kflop interface or Kflop its self without bridging the the opto-isolators -
possibly by inter connecting the power supplies or shorting the tracks on the Konnect board
photos of all the boards and wiring will help
what is supply voltage used to power the relays and are the relays connected to any additional drivers ??
John