Spawn Point Not Working

[Demon Fox Kurama]

I tried to set a spawn point, and it worked a few times, but now it doesn't, and I can't re-set it.

 

[SteveisNoob]

You should place the bed on a consistent house.

 

[Pencilshaved]

Do you have any pictures? For a Bed to work as a spawn point, it has to be in an enclosed space where enemies cannot spawn and the space immediately above the bed isn't obstructed. If you've removed (or actuated) any blocks, removed walls, or placed blocks directly above the bed, it probably won't work anymore.