Thank you so much for reaching out to us! I am so sorry to hear you were not able to enter your discount code upon check out! Please reach out to our support team with your inquiry and include the coupon code or screenshot of the discount you are looking to apply so our team can look into eligibility for the account. 
 
Please note, there are limitations and membership requirements for certain coupon codes. Our team can advise you of these limitations. Discount codes will only be applied to accounts created within 7 days of sign up if eligible.  

Please do not hesitate to reach out to support@study.com if you have any further questions or concerns. We are here to help!