Have you fully discharged and recharged the batteries a few times? It appears the 'actual capacity' is calculated by the BMS based on what it sees on a full charge and discharge. Furthermore, the batteries seem to ship with an incorrect value as the starting point so the number is meaningless till the BMS sees a few full charge and discharge cycles.

Just did a build with 2 SOK 12V 100Ah, Heated w/ Bluetooth batteries and a Victron 2K Multiplus, a Victron Orion TR Smart, and a Victron SmartSolar 100|30 1) I have stressed it to around 109A on each battery and the system continued to run for several minutes before I shut down the load. (This also exceeded the 2KW of the inverter) I also stressed it to shut off, but was not measuring the load so I do not know where the system shut off. 2) Both batteries will shut down (D-MOS turns off) if the Victron MultiPlus is connected to the DC without a precharge. The 330A, no delay Short-Circuit protection is far less forgiving than a lot of other BMSs. Many (most?) BMSs would be able to handle the surge of a 2K inverter. This is the precharge circuit that is now on the build: Inverter Disconnect Switch with precharge 3) Both batteries have a cell that runs away at the end of the charge cycle. The Cell overvoltage is hit before the charge cycle completes and the C-MOS turns off. There are comments online that the balancer on the BMS will eventually take care of this. I have my doubts, but we will see. There may be a need to open the battery and manually balance the cells. 4) When the short circuit protection trips, or the cell under-voltage trips, the only indication in the app that something has happened is the D-MOS or C-MOS indicators grey out. There is nothing that tells you why it is greyed out. There is a battery status page in the app, but I have never seen that page provide any information. It would be nice if that page would display the reason the D-MOS and/ or C-MOS is off. (Or perhaps have a log of recent events) 5) To turn the D-Mos back on, you must put a sufficient charge voltage on the battery. The charge voltage must be a little bit higher than the internal battery voltage. (This confused me for a while when I had the charge voltage turned down a bit and it was not restarting the battery) I prefer an auto reset.... but others prefer a manual intervention after a bad event. Note: An auto-reset would require a HW redesign of the BMS. I wonder if they could add a control to the app that lets you turn it back on? 6) The app indicates nothing about balancer settings or balancer activity. This would be a much-welcomed upgrade to the app

You have probably already figured out that if you put a charge voltage on the battery the battery will wake up. (Note that the charge voltage has to be sufficiently higher than the internal battery voltage to work) I had a similar problem with the D MOS turning off at a high SOC. After some debugging I found out that it was due to the high surge when I turned the battery disconnect switch on. If i read the spec sheet on the battery correctly, the internal BMS will disconnect the moment the current hits 330A. This fast and relatively low current short circuit protection will be very susceptible the the inverter capacitor inrush. I added a precharge circuit to the disconnect switch and do not see the problem any longer. https://diysolarforum.com/resources/inverter-disconnect-switch-with-precharge.60/

I am seeing a similar problem. - 2 SOK 100-Heated in parallel - A BMV 712 battery monitor - A 12V, 2K Multiplus. If the Current as read by the BMV712 gets much above 100A, the batteries shut down. (With 2 in parallel, I should be able to draw 200A) When I put a load on that draws about 80A as read by the BMV712, the BMS in each battery reports 75A (for a total of 150A). This tells me the current sensor in the BMS is off by nearly a factor of 2!!