Sorry for the absence, but the life has a lot of challenges and you need to familiarize with it.
This is a short post, just to say about the strange/weird/broken skype for business interface.
If you are facing it, don`t worry.
This happens just because you have installed the language pack.. To fix it, remove the language pack!!! Another way to fix, is downloading the office pack directly from Office 365 portal, with the correct language already seted from portal.
I told you that it is a short post!