It's pretty easy: Click on "add new" link and enter the desired device name in the dialog. If you select the "Server" (other than "Any") in the drop down box you can use our "Reserved IP" feature on that particular server. By default we assign your device a random external IP from the list of available IPs on that server. If you want a device to always have the same IP address, select the desired IP from the list and your device will always have this IP when connected.
Your Free plan is active and will expire on Tuesday, May 1, 2018 at 4:10 AM UTC