I have noticed that I need to accept the terms and conditions every time that I start the game. Moreover when i change the video settings and i close the game when I start it again they change to default....
Right click WoW -Folder, select properties, un-check "Read-only" and Apply.
If that doesn't work, or if the problem re-appears:
1. Restart your PC.
2. Close and exit torrent. Move your WoW -folder to other folder, away from Torrent's Download folder.
3. Right click WoW -Folder, select properties, un-check "Read-only" and Apply.
4. If you get prompt, Apply changes to this folder, subfolders and files and click OK.