You can probably do it, however you'll need to NOT be using an emulator to connect.
The main problem is that you are using this server to connect yourself and your own emulator... The server is detecting that you should be playing a game with equally matched players and therefore other emulator users.
If you did Block the server from connecting, I'm sure you would also be blocking yourself.
To get around this, you would need to mock a device that is not an emulator, Maybe your UA ( User Agent ) is saying your an emulator, so you'd need to Mock a device that is Not an emulator
"in hope that the server only checks your UA String"
It could be also using the Application to identify your device even further, Therefore you need to change your device inside the build.prop to mock a Non-Emulator device, some device's will also use CPU and hardware inspection to identify the proper capabilities.
It is very hard to Trick some apps, and others are simple !