Maybe that's a little harsh but the last two times that I've had a complaint or wanted to know if glitches were site wide, I was told by AC staff to notify which ever email address they gave me if I needed to speak about something like that again, which indicated they did not want me posting such in the forums. No big deal, though.
First, the "Content Missing" glitch is something that occasionally pops up. It seems like the glitch is on a sporadic time line. Every so often, when it seems like everything else is going okay, the AC servers say, "Wait. Let's hiccup!" and they do so by hiding our content which hurts page views badly. If you ever have a "Content Missing" message, email the Help Desk. Don't go to the forums to see if it's a site wide glitch. You should only do that on holidays and the weekends when there's no one there to fix a glitch so that you can panic and gripe with everyone else over hundreds and thousands of lost views. :)
Second, if you have submitted content for upfront that is getting declined and YOU ARE 100% SURE that you've done the research necessary to ensure that it is a good candidate for upfront, then contact AC Admin to respectfully ask that they take a second look and why. I've had three pieces of content over the last month that have been declined and that I appealed by doing this. In each case, AC agreed that they warranted further review and I ended up getting upfront offers for each of them. (When I get back from Christmas break, I'll make a post about what I do to research an article I've written to see whether I offer it for upfront or not so feel free to bookmark or follow.) Like I said, BE SURE. If you aren't sure, it's best not to appeal. And if you do decide to appeal, don't have an attitude that your s*** don't stink. Be respectful about it. AC staffers go through oodles of emails and content every day. I imagine them a little like the postal service, ready to explode some days especially with the insults and abuse that is often thrown their way.
I hope everyone has a great holiday, however you celebrate this time of year!