Apologies if this has been covered already- I did a search in the thread for a few key words and didn't find anything...

When I go to Itineraries and Check In and click on the confirmation # for an upcoming trip (I only have one upcoming trip), the Itineraries and Check In screen reloads but I receive an error:

Return shortly to Itineraries & Check-in and try your request again.

If the problem continues, Message # 999

(the link is the exact webpage I'm being referred to, which appears to not exist)

The flight I'm trying to check is an award trip that is partially on Air France, and I recently selected my AF seats using the AF website. Ever since I chose my seats on AF (about a week ago), I've received this error and have been unable to review my trip on Delta.com (although I'm not actually sure if the two are related). I've cleared out cookies and browsing history and still receive the same error.