Wrong posts are gotten from restfb API

[Mihaela Paparete]

I am using restfb API to get the Instagram and Facebook posts from the social media pages of my client in order to display them into a web component on the client site.
Currently, I am facing some issues with this API  because the posts aren't displayed according to the official pages. Mostly, the shown posts aren't in-sync with the social media pages,  they have the state that was before the last publication . The inconsistencies for the content can be observed between the instances (DEV, QA, Live). Also, some miss-matches can be seen between various browsers. On Chrome, mostly it works correctly, but on Firefox and Safari, the posts are old frequently.

Has anyone faced the same issues yet?

Thank you in advance!