Hi! I understand you're having trouble with your Café Affetto espresso machine where the changes you make to the drink parameters aren't being saved through the SmartHQ app. Let’s work through this together.

First, to better assist you:
- When you change the parameters in the app, do you get any confirmation that the new settings have been applied?
- Is your machine properly connected through Wi-Fi to the SmartHQ app? Sometimes connection issues can prevent settings from saving.
- Have you recently updated the SmartHQ app to the latest version on your Mac running OS X 10.15.7?

While I wait on your answers, here are some general troubleshooting steps you can try:

1. Ensure Wi-Fi Connection:
Make sure the espresso machine is connected and paired correctly with the SmartHQ app. You can do this by putting the machine into pairing mode—usually by pressing and holding certain buttons together (consult your machine’s manual for the exact buttons) until the Wi-Fi indicator blinks—and then reconnecting it in the app.

2. Update SmartHQ App:
Check that you have the latest version of the SmartHQ app installed on your Mac. An outdated app could cause syncing issues where changes don’t get saved on the machine.

3. Save and Confirm:
After changing drink parameters, look for a “Save” or “Apply” button in the app and confirm the changes before exiting. Sometimes the changes appear made but aren’t finalized unless explicitly saved.

4. Restart Both Devices:
Restart your Mac and turn your espresso machine off and back on. This can reset the connection and may resolve temporary glitches.

5. Check for Firmware Updates:
Sometimes the espresso machine's internal software may need updating. Look within the SmartHQ app for any firmware updates and install them.

If you've done all these already and it still doesn’t save the parameters, the issue may lie deeper, such as a cloud syncing problem or a bug in the app-machine communication.

As a next step, you could try uninstalling and reinstalling the SmartHQ app on your Mac, then reconnect the machine.

If the problem persists, I can help you contact Connected Home Support or direct you to the official manual for more detailed troubleshooting. The manual actually notes some settings can be changed only via the app but may vary depending on machine updates2 7.

Would you like me to guide you through any of the above steps, or do you have additional details about the issue?