If the TM Lewin coupon code isn't working, consider the following steps:
- Check the expiration date of the coupon code.
- Ensure the items in the cart are eligible for the discount.
- Verify if the code is case-sensitive.
- Confirm the minimum purchase requirement is met.
- Ensure the code is valid for new or existing customers as applicable.
- Clear browser cookies and try again.
- Contact customer support for assistance.
If none of these steps resolve the issue, the code may no longer be valid.