Can't Move Multiplayer Spawn Point via Commands

[Sir_Niccum]

Hello,

I've decided to host a server for some friends through a third-party (CreeperHost) and for some reason I cannot use the command /serverconfig setspawnhere OR /serverconfig setspawn x y z to make any noticeable change. The current spawn is on a corner boundary of the map adjacent to the void. What am I doing wrong and how do I fix this?

Thanks,

Niccum