I found a work around, so you can invite yourself.
Google for an unlocked Aviate version. This is probably an older version, but this doesn't mind.
Installed it, and go to Code input, then you can go further, because there will be no code asked. So then you have a Aviate working, and you can invite yourself.
Then uninstall this older version, and install the latest official Beta from the App store. Put in your official code and you are good to go.
Good luck
https://www.google.com/search?q=Avia...hrome&ie=UTF-8