Next page will take you to Contribution address, which is the only address of Sosnovkino (SNKcoin) token sale.
Now go to https://www.myetherwallet.com/
and on the main page click on Send Ether & Tokens. You will need to use the UTC file and password or Private Key again. As we already tried the first option, I am only going to describe how the Private Key option works. Select the Private Key option, type in your Private Key and click Unlock to go back to your Wallet.