Apparently "finn" isn't an acceptable username as "Username must be between 4 and 11 characters." - or is that part of the joke? It'll never work? I'm never sure with these doge things...
It looks like they aren't accepting users at this time.
I can't see what the exchange rate is or whether you can buy dogecoin here. Am I missing something?
You can't buy doge here, it's just a wallet. Doge are for sale on a couple of exchanges, for example