Joomla Free extensions

Hi,
I have just bought and installed the extension, and had it working right after.
Now, my question is: which image is choosen by the extension to compose the post on FB wall?
The system is running Joomla 4, and the articles have "Intro image" and "Full article image" specified in the "images and links" section of the standard-Joomla-article editor's page, while the content of the article doesn't contain any image at all.
None of the previuos article's images was choosen and the article posted on FB has an image that I can't say where it comes from, though I know it's related to the website's logo.
Can you please help me understand how it works?
Thank you

Hi
Current it using image intro, If image intro null it will use image full_text and if null it will using image in content
Is you want change it?
Best regards
Bach Pham

Hi,
My articles all have an image intro, but your extension does not use it. Why?
Attached you will find an image of the article in Joomla with intro image and a second image of how the same article is shown on Facebook.
Thank you

Hello Lucia Stoppa
Can you send me joomla admin via contact form? So we can check it
Best regards
Bach Pham

Hi,
I can't provide you with the credentials to enter the system.
Please, tell me which kind of checks you think are necessary and I will do them for you.
Thank you
Lucia

Hi
Can you send me URL your site? I want check it
Best regards
Bach Pham