Add New Button not working

Hi, first of all I would like to thank you guys for making this plugin. I see lots of potential for this plugin and hopefully they will be realized.
However, I believe I found a bug: after entering the shortcode on one of my pages, two buttons appeared.
The first one is “My Post” and the second is “Add New”
The first button “My Post” shows the list of products you have posted, which works fine.
However, the second button, after clicking, refreshes the page without changing the content, i.e. the page looks exactly the same and the two buttons are still there, with no content below them.

It would be nice if someone could fix(?) this.
Thanks!

https://www.ads-software.com/plugins/marketpress-frontend/