Hello,
I just went thorught the same thing about the social media icons. If you go to the development doc on Themeforest it show that you can remove these icons by go to JanStudio –> Social Network and then just remove/add want you want to do.
To edit the footer, you have to go to Apperenches –> Menu and select the one who which is the center one on the footer.
I am not working for JanStudio, but I hope it helps anyway 🙂