FastNetMon licenses are independent from FastNetMon subscriptions. To manage subscription (company information, invoices, payment details) you can use our self service portal.
FastNetMon's licensing uses external IP address of your server. For many of our plans we allow more than single instances of FastNetMon.
To manage FastNetMon licenses (add new server, remove existing or list all licenses) you need to contact our support team. You need to make your query from your company business email or exact email address when any public mail service was used for order.
If you've installed FastNetMon on server previously then you need to refresh license:
sudo fcli commit
And then check license status:
sudo fcli show license
If you did not install it then you can start normal install process. You do not need any keys in this case as FastNetMon will retrieve license automatically.