Facebook fixed both issues, as you can see here: https://developers.facebook.com/support/bugs/432797794170312/https://developers.facebook.com/status/issues/2298401886902830/
We will progressively catch up items we didn't synchronize during the outage. If you notice we still didn't synchronize any Facebook or Instagram item (comments, ad comments, visitor posts, private messages or mention) , please contact us so we can double check your use-case (firstname.lastname@example.org
For information, this bug also affected our Instagram publishing tool: that's why you might received the following error message: Facebook error: "Fatal (code -1, subcode 2207001) errorUserTitle=Instagram Platform API Error, errorUserMessage=Unable to download image from the url"
Thanks again for your patience