I recently purchased a subscription (BItdefender Total Security--for Mac) for 5 devices (for home, not office). I have installed Bitdefender on 4 family laptops (using links sent to each laptop on emails from Bitdefender), but only 2 of the laptops show in my Bitdefender Central dashboard. The installation has been successful on the other 2 laptops, so how can I prompt them to appear?