I have seen this in a number of installations with the 1200 controller. the licences expire, they are not renewed.... The ability to update goes completely away (rightly) then after a couple of months licensing & update goes away.
but then it comes back as something between 60-80 days. then it decrements, then it comes back again. Even several months past expiry it is showing the licences as "your licence expires in 65 days", two weeks ago it was 69 days.
To be clear, AP licenses on ZD 1200 to manage APs (or other controllers from Ruckus) are perpetual licenses - in other words, these licenses don't expire as long as the same end customer who bought owns it.
That said, I believe you are referring to "Support" contract expiration. To verify the exact end date, after login to ZD, pl go to 'Administer->Support'. On the right side, look under "Date to End".
i have seen this discrepancy at several sites myself... i am talking about support dates who's support expired months ago and still it says that your support is active. this is seen on dashboard...i will try to capture this data and present it here however this issue do exist and have seen on ZD1100 and ZD1200 before KRACK event 100%