Awebooking author Release a free version in wordpress.org which cause the issue with the premium version.
If you update the plugin mistakenly. It will remove the rooms from your site.
HOW you back again old data? Just remove current version and re-upload the latest version via FTP (Pls don’t try to deactivate and remove via “Plugin Manager” in WP-Admin)
I have attached the latest version of this post. please see the bottom. (You must be login to download this)
It will solve this issue.