The only thing I would say about the pop up, which I think is the same language as dl.com, is that the rule about seat assignments is in the middle, after they advertise several amenities for the flight. If I'm reading a warning about a seat and the first few things on the list are about the free coffee, available wifi and free entertainment, I can sort of understand how some might not read the whole thing.

The seat selection detail should be in bold and should be first on the list.