Hi RJK5053,
welcome to the Apple )user-to-user) Community!
Re: Hearing aids and MacBook Air M3 : I have paired my hearing aids to my new MacBook Air. however, they will not connect under my home WIFI.
Am no expert in his area, yet your question surely deserves some response.
Wondering if your Hearing Aids are capable of bidirectional streaming.
The Made for iPhone (MFi) hearing aids in the linked list below are compatible with iPhone and iPad.
Those marked with an asterisk (*) are also compatible with Mac.
List of Made for iPhone hearing devices - Apple Support
MFi hearing devices marked with an asterisk (*) use bidirectional streaming, which enables you to talk hands-free. Devices that use bidirectional streaming are also compatible with Mac.
Other Mac tips: Use hearing devices with your Mac - Apple Support
Change Hearing Devices settings for accessibility on Mac - Apple Support
Some manufacturers may also have an app available, or firmware updates, for their hearing aids.
Many will have a "Support", "Contact", "Compatibility" or "Help" section on their website.
All the best :-)