If your Regal movie pass marked as 'not valid' while using your Chase Freedom Unlimited Visa, follow these steps to troubleshoot the issue:

1. Verify the Validity of the Movie Pass:
- Check that your Regal movie pass is indeed valid for the date you are trying to use it (7/29). Sometimes, expiration dates can be misunderstood. If it’s listed as valid, ensure it has not been used previously for that date.

2. Confirm App and Card Settings:
- Ensure you are logged into the correct account in the Regal app or website.
- If you have recently changed your payment method or account settings, ensure these changes were saved correctly.

3. Check for Ineligibility Notices:
- Some movies may not be eligible for the Regal pass. Double-check the specific movie(s) you are attempting to see to confirm they're covered by the pass. Occasionally, showtimes can be inaccurately marked as ineligible - learn more.

4. Log Out and Log Back In:
- Sometimes, logging out of your Regal account and then logging back in can refresh the data and resolve temporary issues.

5. Contact Customer Support:
- If the issue persists, reach out to Regal’s customer support to inquire further about potential restrictions or issues with your account or card. Additionally, contact Chase customer service to ensure there are no issues with the transaction on your card’s end - learn more.

6. Additional Troubleshooting:
- Check if your Chase card is being accepted on other platforms and for other transactions. If not, you may need to resolve an issue with your card directly through Chase.
- Review any recent transaction alerts or holds placed on your account by Chase, and consider temporarily disabling any security features that may impede transaction approvals.

By following these steps, you should be able to address the issue with your Regal movie pass effectively. If problems continue, documenting specific error messages and behavior when attempting to use the pass can aid support teams in diagnosing the issue faster.