Lynx Shunt VECan 1000 voltage stuck at 0.00V after Battery Voltage Calibration

I installed the Lynx Shunt VECan 1000 a few days ago and it worked great except for inaccurate voltage readings. I tried the “Battery Voltage Calibration” in the VictronConnect app to correct a 0.75v difference (a big deal for this particular installation) and after going through the process of entering the correct voltage as measured on the Lynx terminals, the voltage was arbitrary set by the app to 0.00v. Battery bank was fully charged with a stable voltage and current. Now when I try to go through the process again, the +/- buttons are grayed out and when I enter a value manually it reverts back to 0.00v no matter what I do.

I tried resetting the unit to factory default values, downgraded firmware to v1.08 then upgraded again to v1.10, shut down the entire system for 10 minutes and nothing helped so now I’m stuck with a Lynx Shunt that only measures current and soc. I also verified with a multimeter that the correct voltage is present at the Lynx Shunt terminals. After resetting all the historical data, the battery voltage is now showing negative and way-out-of-range crazy values. Seems like I’m not the only one with this particular issue. Could you please provide some guidance/fix to address this problem?