I’ve been an Ubuntu member for many years. The Ubuntu Membership documentation states that one of the benefits of being an Ubuntu member is “Ubuntu Pro for up to 50 systems for access to ESM and Kernel Live Patching”. However, when I take a look at my subscriptions, I see this:
Same here. I’m a Lubuntu member which also includes Ubuntu membership (I must be one to be the other). I too have just five machines available in Ubuntu Pro. I noticed this the other day, when I was messing about with the new pro settings.
@bernard010 linked to the answer, but for those who want to see it directly here, the thing reports only 5 machines due to a bug. It should still let you enroll up to 50. One of our other official Ubuntu Members showed a screenshot where the “machines available” still showed 5, but the active machines was at 7, and it let them do that.