Help! I cannot login on any expansion

I get every error message in the forums. Cant connect, wrong info, you need to update with Blizzard... I have followed every single hint I could find. Deleted my WTF and Cache folders going back and replacing the realmlist, moving it from its download location to a new drive, uninstalled Battlenet. I don't know what to do and I am getting REALLY frustrated! Its a clean install/download and I did have Retail installed from previous playing back last year, but I wanted to come back to Warmane and continue here now that my kids arent playing on Retail anymore. Is retail having been installed the problem? Ask what info you need and I will reply with it.

1. Check if your realmlist is set to set realmlist logon.warmane.com
2. Open WoW.exe
3. Log in using your warmane account name(not email)
4. Play

Thank you, honestly, but I cannot tell you how many times I have downloaded and reinstalled the game as well as changed the realmlist from the default logon.warmane.ru to logon.warmane.com. I honestly have spent days scouring the forum looking for another answer than the one you provided.
I have:
Changed the realmlist
Moved the folder to a different drive than downloaded to
Unchecked read only (only to go back and find it rechecked)
Restarted my PC
Uninstalled Battlenet
Deleted the actual folder where Retail WoW resided.
Made sure my torrent application was turned off
Deleted the WTF folder and Cache folder, ran the game, exited, and set the realmlist
And all I can think of to do now is ask for help because I have followed all the tips I could find.

So you open wow.exe, game launches and you have just a normal 3.3.5 login screen. You put in your details and it says, cant connect, required update or what exactly?

First time it tells me that my credentials are invalid and gives me a blizzard website to go to. So I try it again thinking that maybe I put my password in wrong and it sticks on Connecting for a bit then gives me the you need to go to some website in EU message. Let me login now and tell you exactly... I swear... MF MF MF MF MF!!! I have fought with this for a week now and suddenly it logs right in without me having done anything!!!! Both MoP and WOTLK were giving me the same issue. Only thing I did different just now was not checking the save login info box.

Sigh... Nonetheless, I thank you for being here to assist me and offering your help. It is much appreciated! At least I know that if I do have problems I can get assistance unlike when having problems with an EA game lol.

So I left you a reply to your question and for some reason it didn't post. I went into the game to get you the exact message so I could post it back up and the game let me login! After a week of trying everything I could find and things I came up with on my own, it suddenly says "Ok, you can login now cause its gonna make you look like a loony to angrylol". The only thing I did different this time was to leave the box unchecked for saving my login info. I don't get it. Gonna try logging in again and checking the box to see if that was it.

Much thanks to you for being here willing to assist!!! Fair weather and following seas to ya!

There is always some connectivity issues in random regions, connection routes, ISPs, repairs/work, etc. Probably that's what happened.