Does not connect to the Asia server

Hello. In the launcher, I selected the region: Asia. Starting the game. Everything is loading. A place appears where you need to choose a category of characters: online or offline. The character that is not created online is displayed, but I want to play online. I click on the tab In the network and the inscription appears: Connecting to Battle.net . Then the inscription appears: Unable to connect to the server. Everything works fine on Europe and America servers. How to fix the problem with connecting to the Asia server?

If you are unable to connect to one specific region, this is almost certainly an ISP level issue and you would likely need to talk with your ISP.

That said, it could also be worthwhile testing another DNS server such as Googles public DNS.