Ok,
I think I understand the problem
Your counter is wrong.
In a page I had no “ads4”, but I had ads5.
In that page, ads5 worked
GO TO SETTINGS!!!
OptionsReset to Default Settings
AdsensePlace up to 10 Ads on a page
It doesn’t work.
You have to check it before to do a new update, else many people like me will not see the ads and lose time and money!!!!
Please, fix it as soon as possibile, I wait a reply here!