I can’t find fault with your settings and since you thoroughly cleaned the plates, probably tried all sides of all plates, it is a puzzler.
You could double check that the part fan is disabled on the first layer (usually set as default so probably the case) and increase first layer width to 150% nozzle diameter.
If that does not help and you are not particularly unfortunate in your build plates (which would however result in differing failure areas on the 4 print surfaces), then I am afraid that my next thought would be rather bad news.
There’s a hughe thread on distorted build plates. While most of them appear to be of a concave nature, a convex distortion would help to explain the failure case you are seeing. Hope its not that as you’d need to claim a new heat bed through Bambu support.