on the right side click the ghost
https://www.hi-chew.com/chew-crew/#spook

click the spider on the top left
https://www.hi-chew.com/story/#spook

click the bat on the right side
https://www.hi-chew.com/chew-crew/#spook

You should get a claim button to get Free Hi-Chew Candy, Keychain and Sticker