Study.com referral code - how long?

[coldseal]

With the help of a member on this forum, I was told that a coupon code is suppose to be in the coupon box when you use the referral link, but mine did not, and it seems many others don't as well, but the code that you need to put in is REFER20. I got the 20% discount with that code used on the referral link sign up. I did not get the 5 free days like the email said, but I will call Monday and try to work that out.