Install a NeoForge 21.1.226 ( MC 1.21.1 ) server through the Control Panel (Servers → Select your server → Game servers → Add Game Server → NeoForge 21.1.226 ( MC 1.21.1 ))
ScalaCube has worked great. the mods all loaded correctly and had no issue connecting to the server. no latency issues as of yet. all around happy with the server