i put google adsense ads on my forum, but always is showing public ads (no paying) , it has been past almost 2 month and nothing changed? why??
It means google can't find advertisers who want to advertise on your sort website/niche... Try to use keywords that got a guaranteed adsense-advertisers.
i don't think they will reply for support... all you can do is put good content on forums..and try disabling ads for 1-2 days and again enable ..
2 months is way too long for PSA. usually relevant ads start showing within 24-48 hours. however, if you didnt verify the PIN, that can happen and u will not get related ads until you verify. did y veryfy your PIN yet?
If you have little content in your site, then that can cause PSAs to display. Adding content will solve the problem. And I suggest you do section targeting, that may also help.