The input field is too short "Yahoo(Profile)", there are not 2 characters in to enter the purse number. You can remove it from the options for entering the purse when you register.
PS I wonder how the purse quickly recognized that I'm Russian? the wallet downloaded translated into Russian. it's great of course, but I did not choose it anywhere during installation and did not pump from the Russian branch! I hope the purse will belong to me and everything will be honest.
You can input on skype or BTC address field instead of yahoo profile so that Dev will check it in the period of distribution phrase, after this period you can replace with different address you want.