Hi my zwo cameras not working

Hi I’ve been trying to solve this with no luck. I have latest ascom zwo drivers, I used
I can capture very bright objects like sirius or the moon, but can’t get enough stars to plate solve no matter what gain I use. I have several zwo cameras, its the same for all. I am using OSC zwo asi 071 and zwo asi 2600. I’ve tried 2 laptops, 2 pegasus ultimat power boxes, new cables. Is there a fix for this? it’s been going on since late february.