If we look for a moment at what happens on Windows Phone, related to this Skype issue, there are many studios and teams that they have to optimize their efforts and resources to be able to launch the best updates to your apps. Having to be dealing with different OS to update them with the same characteristics is not easy, and it is for this very reason that sometimes we find news like this or how Windows Phone stops supporting even Skype.
Skype has a very interesting transition from what was a P2P service to what is the cloud in these years ago. It is now that unveiled a series of changes that have to do with the support given to certain versions. While Microsoft will continue to support Skype on iOS 8, Android 4.03 and Windows 10 Mobile, any user who is on Windows Phone 8 or older versions of Android will not receive any more updates to keep this messaging and calling app updated.
The only thing that happens is that Microsoft has come to the fore as implying that the failures that Skype has had in these last two years, such as those messages not syncing through the different devices or that notifications do not arrive at the moment, they have more to do with the transition from P2P to cloud servers. So now he optimizes the team he works with to try to deal with the most important versions and thus leave those old versions of Android in the lurch and Windows Phone that will not receive updates in version 8.
Anyway, all those problems will still be present, since the transition is not complete Still, Microsoft hopes that this big change in support for certain versions will help solve those most important errors in synchronization and notifications that do not arrive on time. What it does continue is releasing updates on Android.