Hello @stevechibozu
there is no pro version, or payment required to restore the backup on the same site it has been created on. This works with the free version.
If this does not work for you, please feel free to open support ticket here and we will help you with your issue for free.
I was able to successfully restore my website.
Also, I got myself the premium version of the plugin to support the developer and to see future updates and maintenance added to the plugin. Thank you for making this plugin!
Thank you very much for your support @yaniiliev <3
For everyone with similiar problems:
Feel free to contact us and we will help you resolving your issues. Otherwise you can try out a plugin like AIOM which works very well on all systems.