One question if i pay one time for the game i will have to pay again for the atualization
I am not sure what you mean by "atualization", but assuming you've purchased the game through Steam or Itch, you will never need to pay again. Access via SubscribeStar backing lasts for as long as you've subscribed, though if you back at the $20 level you will also receive a complementary Steam key as one of your rewards.