15.3.1 update causing faceID to not work

Ever since my update FaceID stopped working. It used to work even in low light settings but now it wont even work if my face is illuminated by medium to bright light.

I have tried all support documents and how-tos I could find, both on the apple support site and beyond. I went as far as to factory reset my iphone 13 pro max but that did not work either

I have brought my phone to the apple store 3 days ago to be diagnosed once already but all results came back fine and FaceID miraculously worked as soon as the tech touched it but not it is not working again.

At this point I am unsure what to do