Easydiscuus og:tags not being generated

Hi,
in this ticket
https://stackideas.com/forums/easydiscuss-does-not-generate-correct-open-graphs-tags-for-the-forum-posts

I reported this same issue, which seemed to be due to a confluct with the JFBConnect component.
Now I disabled JFBConnect on all Easydiscuss pages, and in Easydiscuss I enabled the options fpr Social Share > Facebook:
Load Opengraph Tags
Load Facebook Scripts

Then I cleared Joomla and Browser cache and tested, but no og:tags are being created.
I am testing with this topic: https://accademiainfinita.it/forum/348-progetto-coemm-discussione-aperta

but with FB Debug tool and looking directly at the source code


Another question:
Even if I am able to make this work, how can I add a default image for facebook sharing in all the forum pages? I used to do this via JFBConnect tags, but with JFBConnect now disabled into Easydiscuss this would not be possible anymore.

Thank you