The demo site has the Twitter and other social icons showing on the right side of the page, and I entered (at Appearance > Theme Options > Social) my Skype handle and my Twitter name. On the live site, there is only a small icon-sized image placeholder box for each, and not the actual icons.
I have tried, with Twitter to format the entry a few different ways:
To help keep support thread separates you should create your own thread for your question here https://colorlibsupport.com/c/unite-support/ instead of replying on others thread as it makes the thread messy and hard to read.
If you want to you can also add reference of this thread in your newly created thread.