I tried calling a few of my friends back to the game, all of them are well over the required inactive time, all of them have checked their junk mail and they have different email services, but none of the emails arrived, despite inviting them days ago.

One of my friends tried contacting support, but they simply got a copy/paste response about how the callback system works, and they can't post on the forums because they haven't been active.

Anyone have any ideas for why this isn't working or how to fix it?