huh? I've changed my ip after my first ban. Used 3 different accounts and both were instantly banned after my first ban.
You could check your accounts in bf4db or bf agency and see the reason for your ban, most likely they link your accounts and that's why they ban you immediately
i can't tell. Not sure if its because the game is dead or not but can't seem to find any tdm matches when just doing in game quick search. Any time I try doing server browser search I instantly get kicked after 10 seconds of joining the lobby.