3D FlipBook - Unable to Install 3D Flipbook Plugin – Cannot Proceed to License Key Entry

Dear Support Team,

I am experiencing an issue while trying to install the 3D Flipbook plugin on a new WordPress installation. Here is my situation:

I have a total of four licenses: one for a single website and one for three websites.
Currently, three licenses are in use, and one license is still available.
To install the plugin on a new WordPress site, I followed these steps:
    Downloaded the ZIP file from my account under "My Items."
    Uploaded the ZIP file to the new WordPress installation.
    Clicked on "Install."
However, I receive an error message stating that the installation is not possible.

The issue occurs before I even get the chance to enter my license key, so I am unable to proceed with the activation process.

Could you please assist me in resolving this issue? Since I still have one unused license, I assume the installation should work without any problems.

Looking forward to your support.

Best regards, Roman