Friend needs help.

[LazyMemories]

The basic steps, that should happen:

1) Click the login button from the top right of this page.
2) Login with your SE Account (where your active sub is attached)
3) New members will be prompted with name creation and then selection of the active character from the game.

What exactly happens after she tries to login? Nothing? Error?

The only thing else to do different is to log into the Lodestone first and then try to enter the forums from there.

Just my guesses...

(and I'm assuming that her game account has an active subscription... since that's required for forum use, unless that's changed...)

Well in order to make a topic you need to be level 50 maybe that's it. (main class you had at the beginning has to be 50)
But getting an error for logging in is weird

[Adire]

Apologies for not responding for a while, I hit my max daily post limit.

The error my friend is getting is that it's not recognizing her username or password, not sure which or if it's both. Attempting to login to the lodestone didn't work for her either. I've told her it's likely a hiccup on SE's end and to contact support about it, this is making me think that even more. She wanted me to ask anyways though in case we were missing something.