My installer connected my 2x 10kwh Felicitysolar parallel LFP battery packs (which have both CAN and RS485) to my Victron Cerbo GX BMS-CAN port but there is no communication. He used a Victron cable type A with Victron terminators on both ends of the cable. He tried both the BMS-CAN and the VE.CAN ports on the Cerbo GX but it didn't work. Please does anyone have experience of connecting Felicitysolar lithium battery packs to Cerbo GX? What is the solution to this problem?