You can play Chillax Hexxit II by adding the server in the Minecraft launcher.
On Minecraft Bedrock Edition, open the Minecraft launcher or Minecraft app. Go to the “Servers” tab and press “Add Server.” Enter the Chillax Hexxit II IP Address hex.chillax-mc.comin the “Server Address” and the Chillax Hexxit II port 19132 in the “Port.” Then press “Save” and start playing.