Question Sharing to facebook not working correctly anymore

All texts shared to Facebook works fine, but not the pictures.
Open graph issue?
This according to Facebook's object debugger:

Object Invalid Value Object at URL ' www.museumships.us/forum1/0518/193-uss-c...-dd-581-commissioned ' of type 'article' is invalid because the given value '2 hours 7 minutes ago' for property 'article:published_time' could not be parsed as type 'date_time'.

See attachment.

Thanks

Pim van Wijngaarden
www.facebook.com/museumships/

Hi 810,

Thanks for your reply, to which I have the following remarks/comments/questions:

1) My forum is readable for guests
2) Using internal images yields the same unsatisfactory results
3) I share many forum topics to facebook on this page: https://www.facebook.com/museumships/ Clearly those shares work fine, but those are all posts that I made with my Joomla superuser account, which was in place when installing Kunena
4) A team moderator makes most posts, when I share those to facebook they do not work and result as shown in my initial post. When I recreate his posts into a new one with my account it works again.
5) I made him a superuser and administrator on Kunena as well, but to no avail. Even when he shares his own posts to facebook the pictures don't work, but when he share my posts to facebook it works fine.
Conslusion; Only posts made with my initial superuser account work coorectly, even with extarnal pictures, as 99% of my posts are.
6) I made a new straight up superuser account Joomla with the same bad results

In other words, I can not get a new superuser account to do on Kunena, what I can as the original administrator/superuser.

Confused and at a total loss.

Hope you can help!

Thanks

Pim
joomla site: https://museumships.us/
forum: https://museumships.us/forum1
Facebook page: https://www.facebook.com/museumships/

xillibit wrote: For property article:published_time it's given the value '2 hours 7 minutes ago', i think it's waiting a more standard value

I don't know what that value should be, nor how to change it?

Just upgraded to Kunena 5.1.1 hoping it would solve the problem, but unfortuantely not.
I can still only share posts from my own account
Hope we can somehow fix this?

Thanks

Pim