Thermostat card for 2 airco units connected to melcloud

Hi all,

I"m new to home assistant (moved over from hubitat), and I have 2 airco units in the same room connected to melcloud. I would like to control them with the same thermostat card. Is this possible? I tried the better thermostat as it has the option for multiple climate controls, but the 1st unit sets to the correct temperature and the 2nd unit sets at 2°C lower. Then more or less every 5 seconds the temperature steps down 2° automaticly on the better thermostat card setting the temperature lower and lower. Any help would be greatly apreciated.

Thanks