Having Problems with Login [WOTLK]

I am getting this error when I try to log into the game: I have verified my credentials are correct and that the realmlist is set correctly but I still cannot login for some reason even though I can log into the site without issue.
https://i.imgur.com/gN5VxY2.png

What am I doing wrong?


p.s. My In-Game name is slightly different from my form name so that isn't the issue.
p.p.s. Realmlist: https://i.imgur.com/9t8Ih8m.png

Were you always getting this error?
Is your realmlist file located in the Data>enGB folder?
Are you using a VPN?
Have you tried closing all other unrelated programs?
Have you tried WTFast or other route tunnel programs to help you connect?

A few questions to help you troubleshoot it