Can’t find airdrops between my iPhone and iPad

This was a quick workaround. The permanent and more secure solution would be to make sure:

• either both the iPad and iPhone uses the same iCloud account
• or add the iCloud email signed in to the iPad as a contact in your iPhone and vice versa. That way, you can use the option 'Contacts Only' which is more secure.

Goto airdrop settings from the quick actions by swiping down and press-hold the wifi & bluetooth tile.

In there, try changing the Airdrop share from Contacts only to Everyone.