Hello @theo1979,
I’m really sorry to hear you are disappointed with Paid Memberships Pro functionality and that you are experiencing issues with your discount codes.
This isn’t normal and something may be conflicting with this logic as I have run a discount code scenario on my local environment with V3.0.3.
I couldn’t find your username or site listed on your WordPress.org profile anywhere on our support channels. Would you mind opening up a new support ticket so we can assist you to get to the bottom of this?
Here is our documentation regarding discount codes – https://www.paidmembershipspro.com/documentation/discount-codes/
I have a free version so no support ticket possible as per your site
here is my site and i read the documentation but it doesnt change the price nor does it display any option to input the discount code on check out
ww.dolife.io
Thanks for opening a support ticket here on .org, we will continue to assist you.