MacBook Air not discoverable by iPhone when using AirDrop

When using Airdrop on my iPhone, my MacBook is not discoverable. However, my iPhone is discoverable on the same MacBook. It used to be able to do both before. Plus, my iPhone can link to my old MacBook Pro 2012 without problem. Please help. Thanks

MacBook Air : M3, 2024 with Tahoe 26.5.2

iPhone 11 : 2019 with iOS 26.5.2