Hi! I see you're having an issue where you've scanned a card using the TCG Collectible Card Scanner app, but you're not getting any feedback from it. Let's get this sorted out together.

A few quick questions first to better understand the problem:
- When you say no feedback, do you mean the app doesn't recognize the card at all, or it scans but doesn't show any info/result?
- Are you scanning in a well-lit area with a plain background?
- Have you tried scanning more than one card, and do none of them work or is it only certain cards?
- Is the card new or from a recently released set that might not be in the app database yet?

In the meantime, here are some steps that usually help fix scanning issues on macOS with TCG scanning apps:

1. Good Lighting and Background: Make sure the card is on a plain, light background (plain white is best) and there's no glare or shadows on the card when scanning. This helps the camera accurately read the card.

2. Camera Focus and Angle: Hold your Mac’s camera steady and try to scan the entire visible face of the card. Scanning at a slight angle rather than straight on can sometimes help.

3. Check App Updates: Make sure your scanning app is fully updated to the latest version. Some card sets may be added in recent updates.

4. Restart the App and Device: Close the app completely and restart your Mac. Sometimes a fresh start resolves temporary glitches.

5. Card Database Sync: If the app allows, manually sync or refresh the card database in settings, so it has the latest cards available to scan.

6. Test with Known Cards: Try scanning a popular or very common card to test if the issue is card-specific or app-wide.

If after these steps there’s still no scanning feedback, there might be a newer bug or a missing card in the database. Did you get any error messages or blank screens, or does the camera view just stay open with no action?

Let me know what you've tried and what exactly you're experiencing during scanning, and we'll go from there!

Are you able to check these details and get back to me?