3 boxes or crates on homescreen without description

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hello forum members,

theres are these 3 boxes or stations on the home screen of ur base which dont have a description and u cant level them up,which when u click them once a day,u get a reward instantly.

is there a secret way,to get more than 1 reward out of them?cause one day i was clicking them hard and got dozends of rewards,pretty good ones also.

greetings