Well I noticed all of my channels went under GAM placements and are no longer showing up when I create an ad through Adsense. So I went to Manage channels it asks me to add new 'custom channels' which I try to do and it gives me Error We apologize for the inconvenience, but we are unable to process your request at this time. Our engineers have been notified of this problem and will work to resolve it. Only thing I can think of is that I am beginning to use Ad Manager for some of my ads around the time this happened.