Hello Jerry and all.
Use the classic Skype which has an hotfix for 7.40, which has an hotfix ending in 151 I think. Try getting it from here: www.skype.com/go/getskype-full
I think for now it's better not to install Skype UWP because interfaces are a bit complicated, though I think Doug is trying to get 'round of it in order to make some scripts for this. Anyway, I recommend you to check the properties and most particularly the version number of the installer you'll get, and if you see something different than what I posted please let me know.