Look at the bottom right corner.
[s]Make sure The spawn is not inside a level,
But within persistent.
That’s probably the issue there.
Pull up the levels tab, and move it to persistent.
(Righclick can also do it, for the level details panel).[/s]
Other things to check.
Is world origin rebasing enabled?
If so, are you sure your player isn’t just falling through the floor when you Spawn?
Easy fix for that is to also place a cube under the spawn point within persistent.
The player will fall into the cube. Then you wait for the level to load.