During checkout after selecting the product locate on the page the text that reads:
Have a code? Click here to enter your code
Click on the text.
Enter in the blue box area the current code that you are trying to utilize.
The 420launch is an example of a code that was valid until 4/27/2021
Click on the Pink Button – APPLY COUPON
Monitor Results – you will see a message saying
Coupon Code applied successfully.
Fill out the rests of the form to check out.