Every time I try to generate a system user access token I get
An unexpected error has occurred. Please retry your request later.
I have tried with existing apps and a new app altogether.
I am just trying to get it for adding to AdMob, it's so infuriating. I have followed the instructions to the letter multiple times.
Does anyone else have any advice on what could be going wrong? A more helpful error would be nice but that's not going to happen any time soon.
This was an API error at Facebook. This has now been resolved.