well, guys

The same problem:
1. Sign message feature doesn't work. Wallet registered on blockchain.info
2. 0.001 btc deposited and credited, but wallet not linked... wtf??

Now i have  0.0011+btc (50-70 active refs of 3000+) on my moonbit.co.in and still count, out of my control(( So that is very bad for me((

I tried to link my dogecoin wallet for a long time by signing message and always failed, until few days ago i finally did it!  
My dogecoin wallet registered on my.dogechain.info


And i even not triyed to link Litecoin wallet cos it registered on cryptonator.com so there is no option to sign message there, also i believe my outgoing tx can be sent from any different addresses..

Well now i have about 0.008+ LTC there (about 10-15 active refs), out of my control((

P.S.
I hope they will fix sign message feature for blockchain.info wallets like they do it for my.dogechain.info wallets....