Can I use same license on multiple servers?

We have 2 separate VPN servers for which we need Pritunl.
I was advised to use the same license on both the servers, which then would auto adjust the quantity and increase the payment as needed.
Is this accurate? Or is there some gap in my understanding here?

The same license key can be used on multiple clusters of servers connected to different databases. The subscription server will automatically adjust the quantity and bill for each additional set of servers.