Yes, of course they’re working on it. Here’s the thread where all these issues are being consolidated: InZOI Won't Launch After Hotfix v0.7.2 - #140 by Sarsoi
People have actually found a workaround through experimentation there. And of course, it will degrade the graphics and is only a temporary solution. But given how widespread the problem is, I’m more than confident that all resources are being thrown at it, and a patch will come out in the next few working days. It’s the weekend right now, and the developers need some rest too so they don’t make even more mistakes from sheer exhaustion.