Bracket for a cracked magnet-spin plate is the Elegoo wash station.

NOTE: This only works for the square-ish plate. It seems they also have a version out with a round hole instead. I dont know of a way to check which version you have, without taking apart the machine.

I included the inventor file aswell.

Remove the bottom of your wash station.

Remove the black plate that holds the motor and the spinning disk

seperate the spinning disk from the motor shaft (held together by a grub screw)

on the plastic bit that the grub screw puts pressure on, check for a crack. If there is a crack, that means the grub screw cant apply pressure, and as such, hold on to the plate when it spins. Put my bracket over the cracked plastic, and you can now tighten the grub screw once more, securing the spinning plate in place, and your Elegoo wash station should now work again.