Since many people experience problems with connection to Hong Kong game servers I find very good free Hong Kong VPN. Actually free version support HK, Japan, Korea and other countries.
vpn for asian games
FlyVPN work for Astral Realm Online and others Alta Games. Also it work fine with Japanese games but 20 minutes not enough to play in single game that why I suggest to use WTFast (Look in my facebook page for link) but WTFast experience problems last 3 months after launching in Steam so right now its better to stick with fly.

Daily limits: you can use this VPN 3 times per day for 20 minutes each time.

1. Download and Install https://www.flyvpn.com/download
astralrealmvpn
2. Start program and chose HK VPN.
astralrealmhkvpn

astralrealmhongkongvpn

astralrealm hong kong
If you see green text then everything work.

3. Start game launcher and after everything patched turn off VPN and enter game.