Yesterday the QS in my campaign went to nothing. Ads are not showing. I researched it online and someone suggested there that sometimes it's better to just create a new AdWords account and start all over again, which I tried. He said that an AdWords rep told him that sometimes that's the way to go. My new account almost instantly showed that all my keywords were inactive and the QS was 1/10. Which tells me that the URL/site itself has a very low QS. Any advice will be appreciated.
The domain may be slapped... If its a new domain then it may take some time before you see good QS... if its a new domain then you can keep posting some good & unique content & submit to some directories or web properties to get few links.. the QS should improve... but may take upto 2-3 months before you see results. If the domain is old & has old QS then probably its slapped...
many question about the QS, What about your content (duplicate or not), and if your landing page have many link out to your own product that mean The Bridge Page and then QS = 1/10
Affiliate site? Lots of ads, little unique content? If that's the case then cut down the number of ads, improve your content:ad ratio, and write some good quality unique content. Also, don't keep creating new accounts - Google hates this and your accounts may well just get banned for good