Help me please… 
Personaly - I would change font and this logo with green background for “N” just doesn’t look good. Overall image that you paste is little to small to watch this work.
Thanks 
Hmm, could you have any suggest for the proper font please?..
i personally think there’s no problem with green but readability a bit
as for me the logo looks good , but u are facing several types of problems indeed. here people will consider the logo in very tiny size and anytime u have thin or small shapes , this is kind of incompatible, the problem is that in your case u have both … the logo looks very good but with the current policy here , this is hard to make with that many details and this thin elements of the logo. I also tend to believe that one or two previews are rather weakening a bit the good feeling that people should have with your logo nd that they thus would have to be taken out, many guys try to set a whole lot of preview color tries and so on when they do not need to and in the end, thy display options that are not so flattering for the work … making both reviewers and potential buyers experience less “wow effect”, but u have a great base to work with 
i think that u should try like this somewhere else, now that’s up to u to try to fix things up and resubmit
Sorry but no, I can’t say which font … I’m just not logo designer , but this looks to “standard” for “unique” logotype - because logotype should give effect of unique …