What settings you think I should check?
Assuming generator is on the Gen Input:
Batt Setup Screen
Smart Load Tab
None of the boxes should be checked.
Assuming Generator is on the Grid Input:
Depending upon your firmware version
Old Firmware:
Grid Param screen
Sell Control Tab
Gen Connected to Grid Input - check the box.
Zero Export Power 10w or higher
New firmware (2023 version of the manual)
Limiter Screen
Other Tab
Gen Connected to Grid Input - check the box.
Zero Export Power 10w or higher
If you are off-grid, you may also want to:
Limiter Tab
Grid Sell - Uncheck
Limit Power to Load - Checked
Also worth checking (for the sake of the generator):
Basic Setup Screen
Advanced Tab
Gen Limit Power
Set to 80% of your generator's run capacity.