[crazy]

Here's how you can upgrade to Minecraft 1.14.4 Release for SERVER
Please Note: Minecraft 1.14+ is very RAM intensive. 1GB for new worlds, 1.5GB for existing is expected.

CONFIGURE YOUR SERVER:
1) Stop server, Go to PLUGINS AND MODPACKS section of your control panel
2) Look for Minecraft 1.14.4 [Vanilla], and click INSTALL


3)
If you want to upgrade your existing world, click upgrade.
We recommend that you start fresh, so New install is best. (If you click new Install, your existing world and build will be stored in a safe place for you to play later)

[Techman]

Fingers crossed for better performance