"Original story could not be proxied" after logging in to website

Hi, I am a member of the website The Wine Front (https://www.winefront.com.au/).

When viewing the feed in Story mode, the reading panel shows where I can login to the site.

When I try to log in (so I can see the content of the post) I then get a “this story could not be proxied” error. Is there any way I can login to the site so I can see the full post within NewsBlur?

you can add a version of the feed that has your login info.

Thanks, however I have tried this and it is still giving me a “you need log in to view this content” page.