Thank you for posting this question! To answer it, our system searches for new posts once every 3 hours.
So if you have a new post on Facebook, it will automatically get updated on your website in about 3 hours.
If you need a faster refresh rate you can upgrade to the Premium plan and we can lower the refresh rate to 30 minutes for you or the Enterprise plan which refreshes the post every 5 min.
Please note that the refresh rate for the free plan is 24 hours.