To join Ender's Minecraft server on mobile, you need to install Minecraft Bedrock Edition from the PlayStore, create and link your Microsoft account, navigate to the "Server Tab", and add our server to your server list.
Requirements
Access to an Android Devices with more than 1 GB RAM that is running OS 8 (Oreo) or newer
Access to an email address or Microsoft account
Overview
Install Minecraft from the PlayStore
Minecraft on Android is $6.99 via Google Play. If you haven't purchased the game before, you'll need access to a google pay payment method in order to buy and install Minecraft onto your device.
Open to the Google PlayStore and search for "Minecraft"
Navigate to the app page, and click on "Buy" or "Install"
Wait for the download to complete and click "Play" to open the app
Create and link your Microsoft account
Open the Minecraft app
Tap the "Sign In" button on the left side of the screen
Use your email to create a Microsoft account or sign in with an existing one
Add Ender to your server list
Return to the home screen in Minecraft
Click on the "Play" button
Tap the "Servers" tab at the top-right of the screen, scroll down, and click "Add Server"
In the pop-up, check the box at "Do not show this screen again" and click "Proceed"
Fill in Ender Minecraft Club as the name, minecraft.joinender.com as the address, and leave the port as is
Tap "Save" to add the server to your server list
Click on the server name (Ender Minecraft Club) in the list, and then "Join Server" in the right panel
There you have it! You successfully installed Minecraft onto your Android device, linked your Microsoft account, added Ender to your server list, and joined the server for the first time. You're ready for the club!