Adblocker Notification

I am getting this Adblocker notification on my screen everytime i click on something (besides the server start button). After that, I have to wait 3 seconds to continue. I find that very annoying, so I tried looking to see if I had an adblocker. Couldn't find one. I also made sure that nothing was blocked, and I looked at possible solutions, but they didn't work. I'm starting to think if it could be a firewall or network setting, because It wasn't doing anything before I went to stay with my dad. It would be very nice if I could get some help on this.