Face ID not working after screen replacement

Let me give you some context here so you can get the whole picture.

My phone feel from a 6th floor into the elevator hole (yes, I had very very bad luck). Screen broke, back cover broke and even the frame was a little displaced. But the phone worked perfectly. I was able to use it normally, even take pictures and take phone calls.

My phone had warranty so I took it to a officially authorized and certificated Apple repair site. Unluckily, they told me that, as the frame was broken, they were not able to repair it. Just Apple policies.

So I had an iPhone 11 Pro that was working but Apple just won’t fix it (or at least try). My online choice was to look for a place that can fix my phone, even if it was not Apple authorized. It took time, but I found it. They fixed my phone and it works like a new phone, except for Face ID. I’m getting a message saying “Face ID is not available”.  So, I took it back to the guys who fixed it but they couldn’t do anything about it. 

With little hope left, I went where everyone with a problem with no easy solution go: to the internet. I found that Face ID parts are linked with some kind of ID to the original display of the phone. But the guys who repaired it told me that they tried with the old display and it still will not work.

So here is my question: Is there a way to fix Face ID? Let’s say I get hands on a new Face ID module. Will it work with this display? 

I will be traveling to the US (if COVID let’s me) on October. So I’m willing to get the replacement parts and kit from you if they’re available.

Thanks in advance!

Juan Cruz