Registering Terminal Services Manager removes the evaluation reminders and sets it up for ongoing use. You enter your license once on each machine.
LK1-TSM-.
The name and key are checked together, so both must match what was issued. When they do, the dialog closes and the program is registered. You can confirm it under Help > About, which then shows the name the program is licensed to, and the evaluation reminders stop.
Your license key is in the email you received when you purchased, and in your account on the LizardSystems customer portal. If you cannot find it, the support team can resend it.
For the same steps in the handbook, see registering your license.