You can play Zep.gg 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 Zep.gg IP Address zep.ggin the “Server Address” and the Zep.gg port 19132 in the “Port.” Then press “Save” and start playing.