API Problems

Hello, I`m a “noob”, and have been fixing some webpages for my self and other companyes. I have cloned a Woocommerce install to a new server, and startet do redesign it. On the old page connecting to API did work, on the new one it does not.. so it has to be something i have f.. up..

Facts:
-Did try to deactivate all plugins and snippets.. Not sorted
-The new server supports API , i did try the same connection to my shop, did work

It is between Woocommerce and Connectmyapps i need the API to work.

Anyone know what file i have f.. up?

I have used a lot of time to design the new one, so i really dont want to copy the old one again..

The page I need help with: [log in to see the link]