I’ve had a similar issue trying to connect my system components, so I totally understand the frustration. I installed solar panels Dublin and was using a Dyness battery with an inverter setup, and had some challenges with communication too. For me, the key was making sure I was using the correct BMS cables and ensuring everything was configured properly in the inverter settings. I had to do a bit of trial and error to get it all working. The CAN and RS485 connections can be tricky sometimes, but I found a good solution by double-checking the firmware versions and cable connections.