when I am on my Ipad and click on my reservations icon, it ALWAYS says "pending" in the top left corner. doesn't mean a thing, what counts is what it says in the middle underneath it, like " you have no requests to answer to right now...." .
about a valid reservation : did you get the confirmation statement from Airbnb, with trip details and payment schedule for that guest per email, that is all that really matters.
I think the Airbnb platform has many glitches and kinks, they should invest some $$$$ into making it better and more streamlined. It's annoying at times...