I'm always a bit perplexed by this type of reaction to this type of situation.

You do realize that if you switch your FFP to American Airlines you will earn exactly zero AA miles for every single AirBnB reservation, right?

Unfortunately, rightly or wrongly, the AirBnB partnership is similar to any other shopping "portal" in which most transactions post, but some, for a variety of reasons do not. I've been pretty lucky with this AirBnB relationship, but to be honest I just always assume they will not post and I never count on it. When they do, I just consider it gravy. You can certainly say that I shouldn't think like that, it's an "official" program and all, but frankly I sleep a lot better not worrying about it.

Additionally, you don't say how long it's been since the AirBnB stays and obviously, if you had 5 stays those have to be somewhat staggered in time, by definition, but I can say that I find my AirBnB stays almost always take the absolute maximum time to post to my BAEC account, per the terms and conditions, which is up to 60 days.

Regards