Hi there! I understand your Speediance Gym Pal’s ring device resistance isn’t changing when you try to adjust it. Let’s get to the bottom of this together.

First, to clarify:
1. Are you trying to change resistance through the Gym Pal app on your Mac?
2. Is the ring physically connected to the Gym Pal machine and communicating with your app properly?
3. Have you noticed if the app shows any error messages or if the resistance level appears to change at all on screen?

A few common steps I recommend starting with on your macOS 10.15 are:
- Confirm the ring device is firmly and correctly connected to the Gym Pal machine’s port. Sometimes a loose connection stops resistance signals.
- Close and reopen the Gym Pal app on your Mac to reset the connection.
- Make sure your Gym Pal machine firmware is up to date (check through the app or Speediance website).
- Check the battery level on the ring device if it’s wireless—low power can cause it not to send commands.
- Try manually setting resistance on the machine itself (if it allows) to see if it reacts physically at all, which helps isolate whether the ring or machine has an issue.

If you’ve done these already, there have been reports in the Speediance community of occasional mismatches where the app shows resistance changes but the machine doesn’t respond accordingly, which could be a sync issue between the ring and the Gym Pal system1.

Could you let me know what steps you’ve tried so far? That way I can guide you more specifically or suggest a deeper troubleshooting approach!