EDIT: Is that the Mini or the Hat. If it’s the Hat and your using the back SPI slot you have to make edits to the examples to use that slot. Or move it to the front slot. If it’s the mini, its the same as the front slot of the Hat, and the examples shouldn’t need to be edited.
Here is a thread I created with what i went through to get mine working.
Before you go through it, I’d double check that SPI is enabled.