This could happen if you press allow notifycation thingy. That's why any mod I download, it must be from Sim file share. My computer or PC what ever you want to call it had weird messages popping up ,and then my computer restarted! Adfly isn't a virus! Not to lie and scare you ,but I almost did get a virus. That's what happens to me- rar files don't show up in my game. Is it possible you have a computer that can't access.
There are a lot of posts how to fix not working cc.