Are you using OpenTX or FRos? If OpenTx, does it communicate with Companion on the PC?
If that is working, then the basics are fine. Search here for "Taranis" for several threads about this.
Note: a previous Windows 10 update installed a new joystick driver that replaced the old one, which killed the connection. If using RF from Steam, Steam too had issues allowing things to work. Both fixes can be found by doing a search.