Hi Mickyboy
You sound frustrated. You will get up to 3 chests a day they reset the same time the clock does here. Sometimes it takes a while for this option to recur. You can try logging out and back in to reset (this tip works for several issues).
The Harvest Event is explained in news/notices, under the horn icon near your mail window. You can use Elvenar's wiki the people icon on the bottom right corner. There are offsite supports as well, Platinum Leaf on FB or Gamers gems of knowledge
My observation, the Neighborly Help clock resets
two hours after the main clock. For me, The Wholesaler (and the change of Daily Quests and Daily Quest Prizes) counts down and resets at 6pm EDT (which I believe is midnight CEST (Germany)), while Neighborly Help (and Double Flare days) takes place at 8pm EDT (2am CEST).
Functionally, this means that for me, if I do all neighbors at about 8:30pm one night and collect three chests, if I do the next night at 7:30pm, I will get no chests, as it is still within the same 8pm-8pm day, and I already got my 3 chests for the day. If that second day, I start at 7:50, I might only see one or two chests offered in the last couple of cities when the clock passes 8pm.