So make up some of that, tried to place some AdWords ads, but the ads will not show no matter what. All of our other ads are showing, but not these, and they have very little competition. Checked the budget, raised the CPC, unchecked the optimization, optimized the ad and nothing. The diagnostic tool even says that the keywords we've chosen do not appear in our account.
I have no idea what is going on. Has this site been banned completely? It is a clean, honest site so I can't imagine why it would be. Nice gift a week before Christmas.
Contacting AdWords support is probably the best way to get to the bottom of such problems, as they can look at your account in detail to pinpoint any issues.
That said, below is a classic thread that you might want to take a look at. It's an oldie but a goodie, though some of the info is a bit outdated. Still, it'll give you a good start.
Most common reasons ads aren't shown
[webmasterworld.com...]
And, here are some additional resources from the AdWords Help Center:
Potential Reasons and Solutions
[adwords.google.com...]
Tool: 'Can't see your ad?' wizard
[adwords.google.com...]
AWA