Hey,
there are some players, e.g. Ahzz (hash 98372658-fe4a-46d1-aa6d-4a78ee59db44) on [OFFICIAL] EXPLORE EU 32, that are blocking the spawn on the primary Yland (built a protected jail around the spawn point so no1 can get out), essentially turning a public server into an online private server.
Spawns should not be possible to modify in any way by players to prevent this (at least on the official servers) - not sure if this is an oversight of whoever created the server or it is currently impossible to protect the spawn at all.