Hi there! I understand that your Amplifon app on your Mac with OS X 10.15.7 can't find your hearing aids. Let's work through this together. To start, could you please confirm a couple of things for me?

1. Are your hearing aids switched on and ready to pair? Usually, they need to be in pairing mode.
2. Have you already tried restarting your Mac and the hearing aids?
3. Are you attempting to connect via Bluetooth directly on your Mac or using the Amplifon app?

This info will help me guide you more precisely. Meanwhile, I'll give you some general steps that often solve this issue on Apple devices:

1. Make sure your hearing aids are turned on and in pairing mode as per their manual instructions.
2. On your Mac, click the Apple menu > System Preferences > Bluetooth. Ensure Bluetooth is turned on.
3. See if your hearing aids appear in the list of available devices. If yes, try to connect from there.
4. If they don’t show up in Bluetooth, open the Amplifon app and look for an option to connect or pair hearing aids.
5. Restart both your Mac and hearing aids, then try again. Sometimes refreshing both devices resets the connection search.
6. If you had previously paired the hearing aids with another device, ensure they are no longer connected there, because this can block new connections.

On Apple devices, hearing aids often connect directly via Bluetooth without needing a separate app for pairing2, so you may want to check the Bluetooth device list first.

Could you try these and let me know what you observe? If the aids aren’t showing up at all, we can dig a bit deeper into possible issues.