Plugins on Minecraft servers generally go out of date with large game version updates to the base game or the plugins themselves. An outdated plugin can cause many problems on servers. Fortunately, they can be easily updated by following the same process as installing them.
Step 1. Download the updated version of the desired plugins .jar file.
Step 2. Log in to the MelonCube Games panel.
Step 3. Stop the server.
Step 4. Go to the Files tab on the left.
Step 5. Open the plugins folder.
Step 6. Select the outdated plugin and click the Delete button.
Note: Make sure to download backups locally to avoid losing unnecessary files.
Step 7. Drag and drop the updated .jar plugin into the dropbox.
Step 8. Start the server.