Airdrop on iPhone 11 Pro Max suddenly not working - keeps staying in "receiving off"
I have googled this extensively. I have completed all the suggestions of turning off / on the WiFi and Bluetooth. I have reset the network settings. I've turned off the phone. I have opened control center and clicked on the airdrop button to change it to "Contacts Only" and it will not update what I am selecting. Goes out of the window - click it again. Nothing. I successfully airdropped many photos from iPhone to Mac and had no issue and last night it just suddenly stopped working. My MAC Air (super old - mid 2013) running on macOS Catalina V 10.15.7) and updated my iPhone to the latest software too (V14.0.1) and still cannot get this working. I am super frustrated! i don't want to have to dig through thousands of pictures stored in "import" on photos to pull the pictures I need to transfer to a specific folder. That would take forward.
I literally change it to "contacts only", go out of the Airdrop area, go back in and it's back to "receiving off". i managed to transfer 4 photos successfully but then when I tried a second time, didn't work.
Someone please help!
iPhone 11 Pro Max