Can not access the /guide/

Hi there,
On my way to launch the site and realize users can not access the heart of the site, which is the /guide/

The page is protected like all others and can't identify what's the problem with it - All people see is a white page. Even members part of the user group that should access it.

As an admin, I see everything perfectly...

Hint : It's content is managed by a plugin called "PA Document"
*located between posts & media
*also have a > settings > PA Document

Ever experienced imcompatibility with plugins using Membership2 ?
What am I suppose to do now ?

Thanks so much for explaining how to fix this