Facebook thumbnail showing the old Forum banner & title

Technical Details

Forum version : #phpBB2
Position : Founder
Concerned browser(s) : Google Chrome
Screenshot of problem :
Who the problem concerns : Yourself
When the problem appeared : The tine when I change my search engine
Forum link : http://rl-rp.board.st/

Description of problem

Hello so, I have this problem for sharing my forum in facebook using url link. As you can see in the screenshot the thumbnail show old banner and forum title. I have already changed the search engine to the recent one which is "Reality Life Roleplay PH" also I have changed the forum banner and already resync my forum, so I would like to ask if how can I update my facebook sharing thumbnail? Thanks to those who can help me.

We do not have access to that information.  Did you just change it?  Give it some time to update.

Yes, I changed all the informations in my forum especially the titles and banner. It's been a week now since I changed it, should I just wait and how long? Thanks

Give it another week.

Alright, I'll follow what you said. Thanks SLGray I'll mark this topic as solved.

Ps.
Gonna post an another topic within a week if the problem is still the same. Thanks again.

You could leave this one open and post at least two times before the week is up if no one else has posted a reply.

Alright thanks, Then I guess I'll leave this open..

Its fine now, you can locked this thanks @SLGray