WotLK i reinstalled wotlk. there was a problem

[owogu]

so i just cleaned my hard drive so i free up space and i installed wotlk and this showed up "failed to apply patch please try again later if this problem persists you may need to reinstall or technical support" . so can you tell me should i reinstall or not if yes will it stop showing the problem again? cause if i do that i dont want that to show up again because it will take hours for me to install it i dont want to waste time and play. thank you

[skullatbash]

log in by using warmane account name, not email address

[owogu]

im so dumb bruh

[strychnia28]

i can´t enter to my accuont in the game (warmane account) a text apear: unable to connect. please try again later.
how can i fix that problem?