On a test SP server which has a installed SharePoint 2013 Foundation we have installed an App from SP Store. My issue now is to transfer the App license from this server to another SharePoint 2013 server. I asked the developers from this App (Ardevia Rich Forms) if its possible to transfer the license from one server to another. They said that we need to set or change the deployment ID for this App and they gave me these links https://msdn.microsoft.com/en-us/library/office/dn449108.aspx#bk_details and https://technet.microsoft.com/en-us/library/jj219471.aspx.
Could someone explain me the steps how to successfully transfer license from one SharePoint to another since it's my first time in doing this.