How do I login?
You should attempt to register (if you haven’t already) with a unique name that would be unlikely to be taken by another player.
Do /register "password" (the password being one you choose and keep private) in /rift and read the feedback message it gives.
Note: Syntax should not include <> or your username.
Example: my player name is Rainbow Airplanes and I want my password to be Two Cars123. I would join on a character named Rainbow Airplanes and do the command /register "Two Cars123" then /login "Two Cars123".
I would not do /register "Rainbow Airplanes" "Two Cars123" or /register <Two Cars123>.