I've done doing all of that, changing my connection etc, I can login in silver but not in gold. I think its just some kind of bugged, because before I logout my account, I cant move my character in pokecenter in cerulean but everyone around me is moving, its likely my character stuck up and then bugged in that location, So I decided to logout,
then when i tried to loggin, its just connecting.. and nothing happens, We have same members with this kind of situation posted on discord official support channel.