Facebook or PivotX 2.3.10 problem?

Hello,
lately I keep getting, whenever I share blog contents on Facebook, and especially when other people like or share them "Sorry, this page isn't available".
The contents are, of course, still on my blog, but Facebook just displays the message above.
I wonder if it is Facebook acting weird (again) or if it is a PivotX problem.
Any help will be much appreciated.
lately I keep getting, whenever I share blog contents on Facebook, and especially when other people like or share them "Sorry, this page isn't available".
The contents are, of course, still on my blog, but Facebook just displays the message above.
I wonder if it is Facebook acting weird (again) or if it is a PivotX problem.
Any help will be much appreciated.