I have a problem on my Mac. About a month or so ago Airdrop just stoped working completely. When I go to Airdrop, in Finder, no computers are listed (even in a Mac Lab with 10+ Macs all with Airdrop enabled and discoverability set to everyone). Other devices can find these same computers. Additionally, my Mac is non discoverable on any device, even though the discoverability is set to everyone. Firewall is off and WiFi and Bluetooth are on and work without a problem. I am NOT connected to a VPN or proxy. Additionally, although possibly unrelated (if so don't answer just thought it may be related), Handoff doesn't work between with my Mac and my iPhone and my iPhone Hotspot is not shown in WiFi unless it is turned on (which is previously did before this).
Trouble Shooting Steps already tried (non have worked):
Restart in Safe Mode
Login to different user
Disk Utility First Aid from recovery
Turned on and off Airdrop discoverability
Turned on and off WiFi & Bluetooth
Tried on a different WiFi network
Apple Hardware/Apple Diagnostics Test
Operating System: macOS Sierra (10.12.6)
Computer type: MacBook Pro
Any ideas on what to do?