Digital download not working when checking out (price changed in the cart)

I am trying to offer my first digital good, altered the code to this:

Aan winkelwagen toevoegen

When buying the product on the website, I get an error from Mollie saying that prices in the cart may have changed and then does not continue. Would you know what’s going wrong here? Here is the URL to the product itself, so you can see it for yourself: Cave de l'Est

Thanks for your help!

I tried it by applying no shipping cost to specific products, but cannot get this to work either! I need to get this fixed a.s.a.p. so hope someone can help me out :slight_smile:

Can somebody pls have a look at this one and get back to me? Thanks!