Install a Fabric Snapshot 21w14a server through the Control Panel (Servers → Select your server → Game servers → Add Game Server → Fabric Snapshot 21w14a)
Honestly I loved using ScalaCube but if they could've added more features and support all up to date mods and new mods it will be amazing. There are some some stuff to do here and there but the good thing that is there is support online. I wish also that ScalaCube add feture where I know more data about my server such as who have joined the server and how many people are in the server and also how long they have being playing etc. But overall I'll use ScalaCube again and also for price it can be also be worked on :)