After having many problems with downloading the patch I managed to succesfully download it after 6 hours or so. Afterwards when I try to login I got another error: battle.net error # 107. ''There was a problem logging on with this account. You may not have a World of Warcraft game attached to your account, or you may be logging into region different from the one you made the account in. If you continue having trouble, please contact Customer Support.'' I searched on the support article how I can solve this, but I am on a English client and my launcher says the game is fully up to date.