You can't have. That model was just released on the 1st February of this year. So your phone can't be the S23 series, six years would more like have been a S8 or S10 model.
Topic closed, problem solved. I have contacted the app developer and the app is not being developed further. The phone is original. Checked on many websites and after contacting Samsung support. However, I got scared that the phone is refurbished.