Please get your license from [https://rustdesk.com/pricing.html](https://rustdesk.com/pricing.html), enter a valid email address in the Stripe checkout page. The license (and the invoice in a separate mail) will be sent to your email once payment is done successfully.
The license can be only used on one machine (for hbbs only, hbbr does not require license), if you want to migrate to the other machine, or download invoices, please go to [https://rustdesk.com/self-host/account/](https://rustdesk.com/self-host/account/). Log in with the email address used for Stripe checkout, unbind the old machine you want to migrate from as below, when you set the license in the new servers web console it will assign the license and register automatically in the console.