We have a Mutiplus II with Cerbo GX, vBMV 712 smart, and GX touch screen. We had the sense that some of our components were diplay models or repackaged, since instruction manuals had been read, quick start sheets missing, thst kinda thing, which makrs us less than confident in them. Anyway, our GX touch scteen is not showing either the MPPT solar or the Cerbo GX. It shows only the inverter. But we can see them all witgh Victron connect. Have turned off the SOC relay since we have lithium batteries. However info not being shared in the system- batteries at 90+% charge, but multiplus invertrr thinks they are at 10%. Should we buy a replacement Cerbo? 
Yes, I have. (read & re-read the manual, and checked to make sure I am using the correct cables, checked the serial number and it's not one of the affected ones). The install is about a year old. As I mentioned, I suspect the dealer pulled some old display units or returns off the shelf and boxed them up. Here are some photos, please let me know if you see anything wrong. 
