Anyone facing issues with framerate with beta on s21 ultra ?

So I just bought A NEW S21 ULTRA only to realise that samsung got rid of MST Bad move samsung MST was a bigselling point for me especially in india .

S21 ultra zoom Test

With Director mode you can capture sun and moon even when they are on opposite end of sky 

Does anyone know Where can I enter the imei number of the tablet to redeem the keyboard cover . The Samsung shop app on tab s7 redirects to a browser ...and there is nothing shown in "for you" section of the shop