Connection error via WiFi

Everytime I log in in WoW via WiFi spot, I get disconnected. However, I’m logged in Battle,net app. It’s OK if I’m connected to the Internet via wire connection (same router).

Technically, playing over WiFi does not meet the minimum system requirements for the game.

A wired connection is definitely preferred for sure. Your Wifi signal may not be strong/stable enough to handle the game (info) or there is some settings on your computer causing it. A lot of the steps on this article will help in general.