If I copy and paste this url in Chrome it´s works perfect, return all articles in the woocommerce plugin, but in Servoy, return the body of the web page.
First of all, you should not be sending that type of URL in as a GET request. This puts your sensitive login information in the clear.
You need to use a POST request. We use https://www.getpostman.com/ to figure out and test all API calls of this nature. Then using Servoy’s HTTPPlugin it is usually just a matter of setting up the request properly. There are situations where the HTTPPlugin doesn’t work at all though and I think this is due to the ancient nature of the code it wraps. We’ve had to resort to using cURL instead (system call).