I worked out a problem that I have been having today and would like to share.
I have 3xMultiplus-II working in 3-ph with solar, wind and batteries. For various reasons I was running a 2-signal BMS (Batrium BMS) and everything was fine. Then I changed to CAN-bus BMS and reinstalled the ESS-assistant. Then when running DESS it never charged/discharged as expected and it took some time to find out why. The two signal BMS was still connected to aux1 and aux2 in MP-2 ph1 and the relays were still opening and closing from the BMS, this stopped the MP-II from inverting when the relay was closed. As soon as I removed the cabling everything has been running smooth since.
I hope this helps somebody, take care out there and keep up the good work all you stars!
