So no matter how many times I reset my fingerprint and face ID it has issues recognizing me. I've deleted my face and fingerprint. I've tried to set multiple ways of recognizing me. I've made sure the screen is clean and clear. I don't know what else to do. It's a brand new phone. Uggghhhh.
Try restarting your phone in safe mode and trying again. What software version are you on? (Settings > About Phone > Software Information > Build Number (last four characters))
Try submitting an error report through the Samsung Members app!
I too have a similar issue. My S8 has trouble recognizing my fingerprint most of the time. Never had an issue before but I bought this phone unlocked but used.