Is this using a hoverdrive controller (teleporter), if so you might have wired it wrong to the beacon sensor and is teleporting you to 0,0,0 (the sky).
if you have access to the rcon command try running it through there
For anyone that wants to tackle this, here's the code in the proper tag. I combined the if statements into one and replaced the second use of "entity()"
The server owner may have entered it in their client's console. They need to enter it on the console that is running the server. It'd probably be best
Stop using setpos after initial creation, and then just do holoParent(Id, entityThatTheHolosAreAttachedTo)
The entity you should parent