Cannot log into one character

[Wesz]

Hey Kiwi_Box, what a nightmare. I know exactly what you are going through. No one will teleport your character, no matter how much I pleaded in my situation, they ignored the request.

I did things like reinstalled windows, the game, all personal folders, clean reboots, driver rollbacks, anti-virus uninstalls, none of these things worked.
I did resolve the issue doing these things I will list now, however I still can't pinpoint what fixed it. Sometimes it comes back, I do these things, and it works again.
If we can help each other, that would be great.

Reset Internet Explorer Settings (google simple guide). Sounds strange but it is linked to FFXIV.
Don't have GeForce Experience running.
Reset System Settings from the Launcher > Config menu.
Make sure you are not running 2 different hz monitors. Example 1 is 144, 1 is 60. Unplug one of them.
Reset PC.
Log into a character that isn't your main.
Log into your main.

Question; did you recently update a NVIDIA driver? If so, was it through GeForce Experience? If none of the above worked but you recently updated your driver, roll it back and try again. Google search easy guide.
Thanks, and goodluck!