Hi Jasta. As Merchandise Credit was phased out with the new pledges, it isn't visible as a primary currency on the website.
But have no fear, it's still there. If you add a merchandise item to your cart, such as EP, when you go to checkout your Merchandise Credit is visible and can still be used.
Your rewards are the same as they were before. We're working on creating a view for people to see exactly what rewards are included in their package, however it was the same as Kickstarter for you, so you can look here as well: