Several solutions to the problem:
1. Download the file https://drive.google.com/file/d/1x1M...ew?usp=sharing and unzip it to the folder with the WOW with the replacement, if you have not done this before, then try to log in.
2. If you can't log in to the game, then restart your router / modem / computer. Then try to log in to the game again.
3. If the 2nd point did not help you solve the problem, then distribute the Internet from your phone, or use any proxy.
