Hello,
The most probable reason is that we haven't received any SMS from you, and the SMS service was working well the last few days. Either you entered the wrong number to send the SMS (the correct number is +41793816010) or you haven't entered correctly your own number in the formulary (check
http://en.wikipedia.org/wiki/Country_calling_code for your international code and then send yourself a SMS in order to check the full number), or the text you sent wasn't correctly formatted (note also that the temporary code that you send by SMS changes each time you complete the initial formulary).
The second most probable reason is that you cannot receive the email we send you in return, either because you entered it wrong in the formulary or because it was considered as SPAM by your computer (check your SPAM folder).
Remember also that the login/password you use for the forum cannot be used directly in the application, you need to obtain your data via the download page in
http://www.foxytag.com.
Please try to register again.
Good luck.