Just to add to the conversation, make sure your utility is connected (you should see the electric pole on each inverter) the utility should come from 2 different circuits. Circuit 1 for L1 and inverter 1, and Circuit 2 for L2 for inverter 2.
One other thing, for the ground I did nothing special, it passes through in the green wire and just make sure it is connected in the AC input and connected in the AC output of the generator. I did not use the ground on the generator to earth.
I did not do anything special else than making sure...
I see, try the settings above and let me know. Are you using 2 inverter for split phase? What type of connector + amp on the generator?
I can't recall but does utility in the AC input (no generator) works for you?
The generator is it a gas, diesel or propane, natural gas, what type of fuel...
Maybe these settings need to be verified?
Setting 01 set as Utl (The AC input charger from the util 40amp) will charge if you use UTL, but you must also set setting 14 to SNU (I used that you can choose CUT but I used SNU.
Setting 02 put 10 amps (Once everything is fixed you can change back...