If you purchased a VMware adapter for Vagrant for VMware desktop product versions prior to VMware Desktop provider for Fusion 11 and Workstation 15, you are eligible for upgrade pricing. The upgrade price is $39 per seat. Enter the email address you used to purchase the license below to begin the process. The new license you purchase will be compatible with the old and new version of either Fusion and Workstation.
If you purchased the VMware adapter after Aug 20, 2018, the upgrade is free. Just find your confirmation email and re-download the license, it is already upgraded.