I got some keywords approved but some not.
I got this msg: Landing page must have disclaimer information regarding affiliation with listed merchants or brands and be above the fold.
what exactly should I do?
Just add a disclaimer at the bottom of your lp and it will do the trick .
"We are not affiliated nor partnered with this site or any product, company, trademark or website" .
do I need disclaimer on every lp or just some special cases?
leadimpact approved for example: google.com but not google.com/. does't look right
Just put it on any lp and then you can remove it later / make it super small 
now I got another problem: Targeting the same offer, the URL, or any term found in the URL of the offer you are promoting is prohibited in our system.
Is this true? For example lets say I have an offer from google.com/offer, I've bidded google and google.com. They acceptet google.com but not google. The thing is 8 people are bidding on google.com and no one on google.
Yep they dont allow it.
Many people do bait and switch to get those passed.
Not much you can do about it.
Damn they, but I'm still curious why they accepted google.com but not google. Maybe they missed it. Thanks for quick reply bbrock32