Cannot connect with my username/pass on logon screen

Hello,

Sorry if this topic was already raised, but I was not sure where to look for it.

I installed Wow (Wotlk expansion old) but I get the following error: Unable to connect. Please try again later.

The servers do not seem to be under maintenance as far as I checked and I can logon here, so I know my username/pass.

I can also load any pages and other online games and I've disabled my antivirus as well as I am not using any VPN or corporate computer.

Could you please advise what could be causing this? Maybe I missed replacing some configuration files or something?

Thank you in advance.

Follow these steps:
1) Restart your PC
2) close your Torrent client and move your WoW folder away from your Torrent's download destination
3) now right click on WoW folder> Properties> remove "read-only"

Thank you this worked! Have a good one!