Airdrop not working
My iMac (El Capitan 10.11.6) is not showing other Apple devices in the AirDrop window and the iMac is not an option on other Apple devices to send to. Also, the blue links titled "Allow me to be discovered by:" and "Don't see who you're looking for?" are not visible at the bottom of the Airdrop screen as shown in documentation and YouTube videos.
I can Airdrop between an iPhone and iPad but not to the iMac from either of those devices. After viewing many videos, I have tried the following:
-Confirmed Bluetooth is on
-Confirmed WiFi is on
-Confirmed Firewall is off
-Recycled WiFi off/on on all devices
-Recycled Bluetooth off/on on the iPhone and iPad (I did not do this on the iMac as the keyboard and mouse use Bluetooth and I am concerned about not being able to turn Bluetooth back on again once those devices lose contact)
-Rebooted all devices
Does anybody have any recommendations for what to try next?
iMac 21.5″, OS X 10.11