Hi,
If you are having trouble with SMS verification, or want an additional account activated, please fill out the following form:
http://appengine.google.com/waitlist/sms_issues
(This is from the following FAQ
http://code.google.com/appengine/kb/sms.html#error )
Once you fill out this form, you should receive access within a day or two.
Happy coding,
Nick Johnson
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Nick Johnson, Developer Programs Engineer, App Engine
Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: 368047