Cables for Nexdock360 don’t work

Sorry to hear about these troubles. It sounds like you might just have a faulty cable from a manufacturing defect that somehow passed QC. I’m curious if the cable would work with any other USB-C devices you may own but, regardless, I suggest you contact Purism Support for troubleshooting or replacement (which is up to them - I’m not support) because both items are Purism products and should be compatible.