Airdrop Issues

Safe Boot from the HD, (holding Shift key down at startup), does the problem occur in Safe Mode?

Safe mode attempts to repair Disks & clears lots of caches, so if Safe Mode works try again in regular boot.

Any change?

To find out if it's system wide or user specific, try this...

Open System Preferences>Users & Groups, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.

Does it work in the new account?

I had some intermittent airdrop issues between iPhone 8 and 2017 MB Pro. Had to change Wifi (MB Pro was on office Wifi extender, phone was on central home network) and also switch off my VPN. All worked after that.

Any luck?

Good work. :)