Hi I have a setup similar to yours, but have 3 US3000C
I have some doubts...
Have you configured your inverter with PVMaster?
Did you have any difficulty choosing the battery make and model?
I have many difficulties, but they get recognized.
On PVMastar on battery now finally appears "PYLONTECH US3000C*3"
I have no difficulty in loading them up to 100%
One of the things that leaves me in doubt if it is well configured is
in the PVMaster in the battery section appears
Charge Current Limit (fromBMS) 111A
Discharge Current Limit (from BMS) 111A
Manual information
Charge / Discharge Current (A)/ 37 (Recommend) / 74 (M ax@60s) / 90 (Peak@15s)