Airdrop will not connect

My iPhone 6s will not connect to AirDrop. It has always worked in the past, but suddenly I can not get it to find my laptop or my work computer, and neither device will locate the phone.
I have verified the phone is up to date. I have rebooted the phone. I have turned both the WiFi and the Bluetooth off and back on. I have reset the network. Nothing has helped so far.

The WiFi and Bluetooth both seem to be working properly. Everything else seems to be okay, it is only Airdrop that is an issue.

I can Airdrop between my laptop and work computer, so I know both of them are working properly.

Any ideas?