Kodak OG5.6kw Parallel Problems

Hi i have 2x Kodak OG5.6kw inverters in parallel connected to 3x pylontech up5000 batteries and each inverter has 10x 460w solar panels connected to them all panels in series,

I have a proplem every now and then the screens on both inverters goes bland and then both of them loose some of their settings like eg setting number 13 i set to '51V' and then after the fault has occurred setting number 13 will be set to 'FULL' and setting number '20' i set to 'LON' and after the fault its set to 'LOF' on both the inverters and it happens randomly atleast 3 times a week

i have run them one at a time for days without any problems and without the fault occurring but when they are used together it happens

i have swapped the parallel cables with new cables -Did not help

i have updated the firmware on both inverters to the same firmware = Did not help

i have swopped my batteries around making another pylontech the master - Did not help

i plugged in the bms communication cable to both inverters and did settings accordingly - still the same

i really cant understand where the problem is coming from how will i know which one is causing this or is it both inverters