Face ID won't recognize my face after screen repair

I repaired an iPhone 11 screen yesterday, and everything seems to be working fine except for the Face ID function. when I go to set it up, it’s like it doesn’t recognize my face at all. However, I haven’t gotten any sort of error message yet. It just keeps trying to focus and tells me to position my face in the frame, sometimes saying I should move the phone lower. It is probably a problem with the dot projector. Hopefully, it’s just obstructed by some adhesive or something, and I can just open the phone back up and tweak it a bit. However, if it IS in fact broken, what should I be looking for, and will Apple fix it to get my Face ID working, even if I did a third-party screen replacement?