Is there anyway to allow anybody from older versions to join your server. and also is there way to change ip eg.sg1.hosthorde.com to play.hosthorde.com
Some spigot builds should allow different versions to join(i.e. 1.8.x clients), IIRC 1.8.x clients can all join 1.8 servers. Changing the subdomain requires a custom hostname, either with a bought one or with Hos: https://www.hosthorde.com/forums/resources/setting-up-a-custom-server-address.63/