I wouldn't read too much into what's on and what's off until after the deadline
It's beneficial for both sides, however both have asked for conditions the other won't/ can't keep, expect a lot of jostling by both and maybe they can reach some middle ground.. that's not Hawaii.
Good chance to read up on North Koreas capabilities.
https://media.defense.gov/2018/May/2...KOREA-2017.PDF