The App hasn't been updated since 2017 (before SYT added the payment system)
Fox Gol is just an App that has automated 10-15 sec clips of the goals.
All the streaming, live updates, commentary etc etc etc is done on:
https://play.google.com/store/apps/...20_com.fic.foxsports_us_others_15712738953869
It also has the full highlights for every soccer game which explains why no one is using fox gol