First, please make sure you log support tickets under correct forum. As you are using Receptar theme, I’ve moved your ticket from “Legacy themes & others” to “Receptar” forum for you.
I’m not sure what you mean, but the theme does not do anything with WordPress admin area/dashboard. Maybe you’ve just changed your admin color scheme? ;)
If I understand correctly, you would like to remove the advertisement from your website. Please note that the theme does not contain any of such things. You are most likely using a plugin and from your website code it looks like your Jetpack plugin has ads enabled. Just disable them and you should be fine.
Tip: I can also see you have enabled Jetpack Mobile Theme. Please note that this is unnecessary as all my themes are responsive, mobile-ready. You can disable the Jetpack Mobile Theme.