Sandisk Ultra 32 gb 3.O will no longer show up on my Mac.

After having used the memory stick on a Mac and ejecting it, it does not show up at all. I have tried multiple PCs, USB slots and tha Mac it was on before but nothing happens, not even an error message.

Also, I’ve checked the Disk Management and it’s not there either. Is there any way to fix it?

Something happened. I’d suggest returning it.