I did a system restore yesterday to try and get rid of the crap adds Ive been getting the past few days.
When it had finished, my Google seemed to have gone so when I went to install/download, it refused and got this message
..................................... ................................... ........................
#You haven't accessed the Google Play Store app (the white shopping bag icon) on your device with this email account. ##.
I regret being somewhat lost by what is really bothering you.
If you are using Windows 7 with Firefox, why are you concerned about the rubbishy Google Chrome.? If it's just to play an 'on-line' game, I opt out of replying any further.
Incidentally, I fail to appreciate that 'System Restore' will alleviate problems which you are having with adverts. They will return if you revert to using Google Chrome.