Can't add workspace to Remote Desktop

Hello everyone, I took my laptop to the repair shop yesterday, and they reinstalled Windows on my machine. I’ve downloaded many apps again, including the Remote Desktop so that I can reconnect to my VPS machines.

However, I can’t get past this “subscribe” screen, and I’m not sure what to do. I want to add my workspaces and the IP, etc so that I can connect to each VPS. Any thoughts?