If it refuses to add fingerorints then if this was my phone I'd back up and factory reset.
If no joy then I'd ask for a new one from the source I purchased it from @Daz-
🌈 Stay Safe 🌈
Daily Driver > Samsung Galaxy s²⁵ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
