You'll receive it on the same email as was registered with your previous Tommy account (indirectly the email you used to retrieve your backup). Most probably invites aren't sent throughout the day, but at specific intervals so that the server isn't burdened all at once.
Create a new post in the customer service forum regarding this and we'll send you a Ricky invite. Make sure to include your transaction ID (or email, if you donated through GoFundMe).