You should try the telegram group, the devs are active on it daily and a help channel has been setup. So that would be your best bet.

All i can say is I have successfully claimed my PPY tokens, old style where you needed to donate to the bitcoin address and then the later one where you downloaded the keypair file. Claimed both no problems. Never used steem though, just bitcoin. But the process should be the same.

I had a quick look on https://www.peerplays.com/crowdfund/ and your public key doesn't seem exist. And i notice on https://steemit.com/@peerplays-ico/transfers that yours has request next to it and no one else's does. Not quite sure what that means though, new to steem... first post!

So yeah try the telegram group, hope you're able to resolve your problem. Good luck!

EDIT: link to help channel https://t.me/PeerplaysHelp