No, then you would get a message from the bot that you have too much bots spawned already.
1) It might take a short while for the server to reload changes on vip.txt / sysop.txt . Give it a few minutes
2) Check if the password is correct (try logging in on the account yourself).
3) The bot might have trouble to create a new account if the name specified doesn't exist.
4) Use ?find to locate the bot, it might have spawned in a different arena.
_________________