So the multi bank is not supported, but that does not mean it will not work. If you have the 2x 100A BMS I would suggest you keep them. You will get power from both BMS and you will see both in the device list section of the Remote Console, but they will override each other so it will seem that there is only one BMS.
Here is some pictures that might better explain (as this is how I am currently running it.
Here is the JBL and JKBMS both in the device list:
View attachment 73206
But in the dashboard you only see the JBL and it's values (see the 30% SOC)
View attachment 73207
And in VRM you will also only see the one.
The system itself will function fine. It will charge and discharge both. But the settings and limits will only come from the one.