Exactly. That box is not on my screen. I'm using Chrome browser, not the app. I'm in the US, could that have any bearing on it?

The flight dates are 45 days away and the seat map is fairly empty.

Did you get that screen grab today? The chat person on easyJet's WhatsApp chat app told me repeatedly that they aren't offering them any more, yet the website is full of details such as the ones you linked to.

I'll look again tomorrow and maybe get the app. I see the fare difference is €130, or to put it another way, 400% more! Maybe I don't care, but I'm interested in the flexibility feature, and will be buying a hold bag and seat assignment (nearly €50 anyway).