Same problem with Cocoon and ads here. Everything else seems to work okay with CocoonJS 2.0.2, but the ads (Admob/Mopub) are not served properly - sometimes ads from the mopub-Marketplace appear, but Admob does not work at all. I tried loads of different settings and I am somehow relieved that I am not the only one with these problems, nearly went nuts with the whole thing. I hope this will be improved soon.