Promo codes on integrallife.com might not work due to several reasons:
- Expired Code: The promo code might have expired.
- Usage Limits: The code might have reached its usage limit.
- Incorrect Entry: The code might have been entered incorrectly.
- Specific Conditions: The code might have specific conditions or restrictions.
- Account Issues: The code might not be applicable to the account being used.
If none of these reasons apply, contact customer support for further assistance.