I'm writing because we've notice some problems with facebook ads connector.
The data often takes a lot of time to appear in the dashboard or, sometimes, does not appear at all.
Do you know if it's something will be fixed in the next days or if it's something related to the new facebook privacy issues?
There appears to be some stability issues right now the Facebook API service - see this article for more information and some workaround ideas that may help ease the problem:
Facebook is aware of their issue and will be working on it, but haven't given a timeline as to when it will get better.