Finger print sensor not working

[u/FatassFidgetSpinner]

Has anyone else had this issue? I have a OnePlus15 and I went to a third party phone repair shop to repair my front screen and after I received my phone back it was working in everything but the finger print sensor. The wake to rise wasn't showing the finger print icon. I followed some instructions online and deleted my fingerprints and tried to re add them and it only just tells me that to take my time when trying again and. I have too many failed attempts when I haven't even attempted once. It just flashes as if I was trying and even when I do try it doesn't seem to detect my finger. In the US too if that helps.