HDX Apps lagging behind making it obsolete

Hello,

Facebook issues:
Cannot watch videos in Facebook
Cannot use new Like feature. I used the same steps I used to get it working on my Android phone all the way up to clear cache, data, stop and open and login.

Is Facebook stopping Developing? Or is it because I am running 4.5.5.1 I think it is? Isn't it Android 4.4.4. I understand new versions don't show up in older OS's.

The new 5.x was available to manual download yesterday, but was pulled by today. I should have downloaded it last night...

I don't know if I should sell mine and buy a new non-Amazon device or not?


Also the AccuWeather paid app is old and was not working on my Nexus phone right. I removed it and had to pay for the paid version on Play and it was a new major version, new and better UI and no more current temp running off the screen so I can't read it.

Is this because of the lack of the 5.x update? Or are dev's dropping support for Amazon App Market?

Thanks.

Fire HDX 8.9 3rd Gen