You can play OneBlockMC One Block 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 OneBlockMC One Block IP Address org.oneblockmc.comin the “Server Address” and the OneBlockMC One Block port 19132 in the “Port.” Then press “Save” and start playing.