Macbook sends via Airdrop but will not receive
I can send a photo from Photos on my MacBook to my iPhone.
But when I send a Photo from my iPhone to my MacBook, I see my MacBook and click it, and now Airdrop on iPhone says "waiting". But nothing happens on my MacBook.
Yes, I have read Use AirDrop on your Mac, and I have made sure the firewall will allow airdrop. Airdrop on the MacBook is discoverable by everyone.
???
MacBook