I'm Dmitriy and I'm from Russia (and I'm not so Angry
)
I came to mobile after 2 years in SEO (ouh it's so original
). Read a lot materials, and as many guys here started Mobile cookbook (Appetizer) - tried the bunch of CPI offers on Decisive - but with zero results (--99ROI). But after some time of thinking I would dig deep into sweepstakes offers for some time.
And I started with pretty "standard" LP's on different POP and redirect sources (ZP/RevenueHits/PopAds/PopCash)
and 
And as you can guess nothing good happened with this landers - CTR and CR pretty the same on different traffic sources, but I can't get CTR higher than 15% on pops (with alert/back button/etc scripts, and 2-3% without) and 30% on redirects.
After that tests I run more interactive and game-like lander:

CTR is the same but CR is incredibly low.
At this stage I tested list of sweepstakes offers and found one that converts x5 times better than others, so I can take this offer as constant, but traffic sources and landers as variables.
Ways I see to move forward:
- test another LPs and Traffic Sources
- try DSP networks
- try FB with Quiz landers for audiences with targeted interests (like Sherlock TV series fans)
But I really confused a little bit at this stage
. So please guys - comment my efforts and give me some advice 
Best Regards
and from Russia with Love 
Hey Dimitry, in a similar situation. Will be following closely. Good luck!
The first landing page is a cloaked landing page, they basically detect you're on a desktop pc and redirect you :/
Not saying that landing page can't work, but it was designed to prevent you from swiping the actual landing page.
I would suggest using a VPN on your mobile and manually spy on traffic sources like Adcash and Zeropark, going through t1/t2 countries you will come across the same fb themed landing page which will likely provide better results. (apkfullpro.com for adcash and isntagram.com for zeropark domain traffic)
@callmep Thanks so much for your wishes 
@jack45 I was thinking about it - because it is most popular and old landing page at mobileadscout. Thanks for idea! I would spend more time at spying ))
hey dmitry.
yeah i also tried more interactive game like LPs for sweeps but they all failed more than the standard FB themed ones.
also tried the fb quiz landers. also didn't work better than the "instant winner" style.
i wish there was another more interesting lander. but alas.
On the second lander (the interactive one) you've got a reasonably serious typo that might well be hurting your CTR: both times where I think you want "Tap" ( as in "tap as many times as you can") it reads "tab". That's likely to be confusing people.
Hi Eric
If you want to find out a domain for a specific website id on adcash, I believe ratalliance made a post on these forums about how to do it via google search.
As for spying in general, I was simply browsing apk sites till I found one which used adcash pop ads.
I will search around for that post, thanks for the heads up
sorry for late reply!
Thanks for all your thoughts!
First - I tried game lander without typo - results pretty the same.
Tried a lot of things and was very wondered why so little amount of conversions, at one point I was thinking that there is a lot of bots (as everybody think at some point).
But I found a way to test it: I created a super simple&stupid html page with "win iphone" title and aweber forms - Just asking email + Full name, and replaced in voluume CD offer with my simple page, and test showed me x100 conversions with the same landers/budget (50% of subscribers confirmed their emails instantly).
So guys there is not so much bots there, but burned/hard for users offers.
P.S. purpose of this test was not to collect emails and promote sweepstakes via emails ) just to test "offer" with control over conversions
Wow - that's a creative way of testing for bots! 
I thought you had already found an offer that converted somewhat well?
It will take a lot of testings of landers and offers. If your current offer is converting badly, PM me for recommendation of a decent offer you can use for lander testing.
Amy