Thanks for your feedback! We really appreciate it!
We had several cloud server resets, so if you chose this option to reload your backup instead of the local one, then yes, you may have lost everything :(. Remember to back up manually so that you always have a backup for the future. We apologize for the loss, but as you rightly point out, this is indeed the risk with Alpha versions, even though we do everything we can to avoid this kind of scenario!