No battery monitor info after upgrade to firmware v3.67

I have a CerboGX monitoring our onboard DC system, consisting primarly of:

  • MultiPlus 3k
  • 5x MPPT controllers with solar panels
  • BMV-712 battery monitor with shunt
  • bunch of other smaller components
  • 4x LifeLine 8D batteries

I have been running on firmware v3.51 and system has been stable. I decided to upgrade to v3.67. After the upgrade, my GX UI (web UI) shows empty boxes - no battery size, SOC, current/voltage, anything. When I went to CerboGX settings, the system does not show any battery monitor active or selectable. My guess is that it stopped communicating with BMV monitor and cannot show any data. When I reverted the update and went back to v3.51, everything is back to normal.

Anyone has seen similar issue? Any known compatibility problems with v3.67?