iPhone 6 and Germany is "currently" not an good combination. It's saturated....has been run to dead the last couple of months with the iPhone 7 angle.
You'll still see many guys run it. But they have the good zones under lock and are grinding it out on low margins. As well not on street payout. Would choose other geo/offer.
In regards of lander: currently Facebook landers seems to have an revival, but there are some betters out there than the one you're using.
If you want to make serious $, popads is as well not the right traffic source to run. volume is too tiny there.
Ok thank you @sebastian_r
So what would you recommend like traffic source and country ?
find a low paying offer in a big shitty country with low competition but high enough smartphone penetration. brazil, mexico, russia, turkey, SEA...or total shitholes like pakistan, nigeria, india. essentially all countries that are not too crowded by affiliates but have plenty of smartphones. all the mentioned countries have at least 30-60 mio smartphones (india around 160mio). The mentioned smartphone penetration data is from 2013/2014. So by now it should be even more. But you will experience that the less average income in a country = the less offers are available.
It will be hard to find a good offer in those countries, but when you hit something, you have endless room for scaling. Testing is cheap as well, all mentioned countries have an average CPM between 0.5-1.5$. And you've good chances that a decent amount of smartphone users have never seen that "scary" anti virus or "scammy" sweeps/pin lander before.
For landers: spy manually with HMA or take some landers that are working in Tier1/2 and translate with Onehourtranslation
Great. Thank you for your advices.
How do you know on which websites to spy ? Because on PopAds they only give you a unique id number for a given website. 
google the keyword "movie stream". the big players will show you the ads of your target country when you have (1) local ip (2) local language enabled on your device. most of thee time it's enough to click around on the results from the first site to get everything you need. or check out this database https://www.dropbox.com/s/6979j21779...ying.xlsx?dl=0
would like to give credit, but have forgotten who created it. the international movie sites listed have international traffic, hence international pops.
Ok.
I will see with my AM for other offers.
Thanks again @sebastian_r 
Anyone can grab a list for any geo by going to zeropark, setting up a PPV TARGET campaign, and in the end they'll show you a huge list of targets to choose from. Simply copy the whole thing and save it somewhere.