Can’t install Pro version

Dear @vincentwhittlejr,

Could you please checkout this documentation regarding installation: https://backup-guard.com/products/backup-wordpress/doc/install-backupguard-pro?

Regards,
Lisa Breen

For pro or commercial product support please contact the author directly on their site.

As the author is aware, commercial products are not supported in these forums. As you are their customer I am sure they will have no problem supporting you there.