Thread image not shown at paste'd links

Hello there guys/girls
I am admin of a phpbb3 forum (https://thebrick.forumgreek.com/forum)

When I post a new thread that contains a photo, I used to paste the URL of the thread in Facebook, and the Facebook post would contain the thread's image.

That used to be the case long ago, nowadays when I paste the thread's URL, Facebook post (or messenger or whatever to I paste) contains the forums logo image.
Anyone able to help me please?

I want the post to use the thread's picture like it used to do.

hello

Please provide us an URL of one of your topic which includes Facebook embeds.

sorry you mean on Facebook you do not get the post image but the logo right ?

you need to see Facebook new policies what i do myself is i delete the logo manually by the x button and upload a new image

also for the image to be appeared instead of the logo i think the forum must be visible to guests

read also this https://meetedgar.com/blog/facebooks-new-link-previews-need-know-2018/

the forum must be visible to guests

That's it, thanks a lot skouliki, να σαι καλά!

my pleasure !!!

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