This isn't a good way to make me want to upgrade. You give me a pop-up in the middle of a game and now I've got a big white square in the bottom right of my screen. There is no process tied to it or I would just end the task. I can understand you want me to upgrade but this IS A VERY POOR WAY TO GET MY ATTENTION. I've already received 2 emails in regards to upgrading. This should be sufficient in terms of getting my attention.
I, however; do not see where I clicked "I accept you to bombard my computer with un-removable ads." All this is doing is making me want to remove your product to remove the spam for your silly little upgrade that I WAS planning on getting. After this I might rethink who is in control of my virus protection as well as access to my computer.
Either give me a way to remove this little piece of crap ad or I'll just remove bitdefender. Easy as that.