You can play Ixil SMP 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 Ixil SMP IP Address ixilthicilix.aternos.mein the “Server Address” and the Ixil SMP port 19132 in the “Port.” Then press “Save” and start playing.