No Bluetooth with Fenvi FV-T919 on Mojave

I'm new to the Hackintosh world, and just built my very first machine. It works great, except that I'm having issues getting Bluetooth to work with my Fenvi FV-T919. WiFi works perfectly, but no Bluetooth. This seems to be a common issue, and I've tried to follow the advice in other posts, but don't know where to go next.

Here are the things I've done so far in a attempt to resolve the issue (mainly by trying to follow the...

No Bluetooth with Fenvi FV-T919 on Mojave