That’s a snapshot of the last 100 days and whether they currently qualify for TL3. However, with the grace period as a factor it could be that they qualified for TL3 before that time window and have not yet been auto-demoted (now they no longer qualify). Does that make sense?
No, just that it’s a rolling 100 day window. If you could rewind a couple of weeks and look at that 100 day window it may have shown that they had read more posts (or there were less posts to read and therefore a smaller percentage threshold to get a green tick for that requirement). And similar for the other ones they’re not currently meeting.
Eg. Let’s say 100 days = May, June, and July. On May 1st, 2nd and 3rd I was really active and read loads and gave out oodles of Likes, etc. Over the course of the period I then meet the other requirements too and achieve TL3.
But then I taper off in July and don’t really read anything or give any Likes, etc.
When you look at my TL3 Requirement stats on Aug 3rd my super active period at the start of May is no longer part of the 100 day rolling window and those posts read/likes given will no longer count towards my TL3 tally. I’d have a lot of red marks and would look like I should no longer be TL3. However, if I’d only been promoted less than two weeks ago I could still keep my TL3 under the grace period (under the premise that I may well regain it again soon after if my activity picks up again).
It’s hard to say for absolute sure as I’m not familiar with all the details, but it is possible to see a TL3 Requirements page with red on it yet the user is still currently TL3 (based solely on the automatic behaviour with no group or manual TL adjustments).
Glancing over their activity stats in the user directory may show more activity than you were expecting, or possibly a deeper dive with a data explorer query.
Double-checking their groups may show a cheeky one with an accidental TL3 bump.
If they were an invited user you could check the Default invitee trust level and its history to see if that was ever erroneously changed to TL3.
You could also check to see if any of the TL3 requirement settings were ever changed to loosen them up before being changed back again.
Some of this will be more kicking the tyres, but could be worth checking just in case.