Maybe linked to this problem, maybe not, but I have seen 2 players on the TM (1-2 day left) getting 3 more days for free.
I seen this with this player
(19246738), but I wasn't sure so I waited another and this one appeared
(22593474).
They haven't been sold and put again on the market, they just got an extended period and I don't understand how. It's possible when you are supporter and put it on market, I'm aware of that, but not once it is on market ...