Can't find a UE55TU7105 TV with my Xiaomi Redmi Note7 & 8

I’ve both Redmi models with SmartThings App installed. I’m not able to find my Smart TV using Scan neither with QR Code nor specific model. I was able few years ago with my old Xperia Z5, but now with both new phones is impossible. This is normal? or should I try with another phone?

Almost solved, I’ve tried to cast my phone to the TV and then it appeared on SmartThings, but now the problem is when the TV is going to be registered, the error 13-001 appears