This guide explains how to install any plugins onto your Minecraft server.
Login to your Multicraft account and go to "Files>FTP File Access"
On your FTP page, you will either see "create FTP account" or your existing FTP access details. Login to your FTP account using an FTP program such as Filezilla.
Once logged in you will see your "world" folder, enter this folder. Inside this folder, you will see "datapacks" folder again enter this folder.
Download your Vanilla Tweaks datapacks and extract the folder that has the name "UNZIP_ME".
Upload your datapacks to your world's "datapacks" folder.
Restart your server to enable the datapacks installed.
If you get stuck reach out to our support team!