Minecraft PE Cannot connect to server for Mod import

Hello! We love tynker so far, but are having difficulty with loading Minecraft mods. We have followed the guide posted but no luck. We are using Tynker and Minecraft PE on an Ipad. when pasting in the command for the created mob we get the message “Cannot connect to server ws://m.tynker.co/raise195”
Our new Minecraft world has cheats enabled, and the “require secure socket” feature is turned off. Is there something we are missing? I have been over the tutorial several times. Thank you for your help!