Your P99 forums account and password are not the same as your game account and password.
You have to create both. Go through the setup guide.
https://www.project1999.com/forums/s...ead.php?t=2651
"There are two distinct accounts that must be created before you can log into the game. The first is a forum account (This can be either a Project 1999 OR EQEmulator forum account). A forum account alone can not be used to log into the game, but can be used to manage any number of Loginserver accounts which will let you log in and play."