I see there is a related question, and it appears the answer is that the X-Plane 11 (digital download) requirement to re-enter my serial number every few days may be intentional. I thought maybe my system was having a problem keeping the registration current. I wish there was a less draconian way to prevent piracy, and I understand it is what it is, but I don't like it. Not many programs require users to manually (copy and paste I know) re-enter their serials every few days, and I have several high-end apps running on my PCs.
​Since I'm taking the time to write this, can someone please (re-)confirm that this requirement in X-Plane 11 digital, to re-enter my serial every few days is intentional? I never have any trouble re-registering, but I just want to make sure this is normal behavior, since some registration systems allow a finite number of registrations under their licenses.