Correct. 3+ the Scouts' Tavern bonus.You can get up to 3 neighborly help chests per day, from what I remember.
Sunset towers will add seeds to the chest, and a fed Moonbear (from the Zodiac event of 2020, I think) will add 3KP. First NH of the day will almost always give a "chest", after that, you may need to give some more help to get number 2 and 3 (and more if you have Scout's Tavern).You still get help chests. It's just at one time you had to hunt for them in the cities of those you were giving neighborly help. Now its been automated. Every time you give neighborly help you have a random chance of triggering a chest. When you trigger one you should be getting a popup message indicating the reward you got. This can occur three times a day unless you have the scout's tavern. The Great Bell Spire/Crystal Lighthouse increase the size of the reward you receive.