if you go to your browser settings, you should be able to find the area to stop popups.
Same problem here. Need some help with this. Tried clearing data etc...no help This site has worked flawlessly for year but this is impossible to enter things. I enter on a tablet...in case this matters. Would appreciate help from the savy computer folks out there. This is beyond this old gal.
Had this same problem yesterday trying to enter sweeps on my iPhone, versus my usual home computer, and was shortly after bombarded with about 400 spam emails to my Inbox. Among them I found an email about a fraudulent purchase at Best Buy. I'd recommend you check your emails carefully, just in case.
I had the same thing happen to me at Best Buy last year. It had absolutely nothing to do with this site or the pop-ups talked about, since I don't use a phone and never had a problem like is described here. It's a known scam on Best Buy where a hacker will get hold of your password, and will place an order for a small item to be picked up locally. If that purchase goes through they know they can order something else, and usually place an order for a larger item to be sent elsewhere, and at the same time enroll your email address to a bunch of mail lists....and do it hundreds of times hoping you'll delete all those emails at the same time and miss the email you get from Best Buy for the orders they made.
If you ever see that you're spammed by that many emails, don't delete them all at once, but carefully go through them looking for an email from Best Buy.