The bots are out of control. I had 4 Lego listings get hit this week, one of them (Crater Creeper) became unsellable because the bot thought something with the name Creeper in it must be related to pesticides. Atleast that one they fixed after opening a case. The other 3 listings they just removed, I sent receipts from Lego.com (only place you could buy them) to try and reinstate 2 of them but the receipts are old and they want proof of purchase that was issued in the last year. Pretty hard to do on stuff that's been discontinued for 3+ years.
The 4th listing got taken down just yesterday Nexo Knights Stone Monsters Accessory set 853677 and I'm not even going to try fighting it, there were only a half dozen or so sellers so It'll probably just disappear from Amazon forevermore. It was only released in 2017 it's the first relatively new set that I've had problems with, perhaps a prelude to the fun that awaits in 2020.