Why Didi the crocodile doesn't give me a safe?

I am not sure of why this is, however i am having the same problem, so far i have fed Didi about 8 or 9 times.I have sent a message to the King help center, via the games loading screen and i recieved an email to come to this site where i can look for a post on my problem or post about the problem and get community help from other players! Not sure how other players are going to help me get my missing rewards for feeding Didi, as i am pretty sure it is a bug that king needs to fix and arrange for the people affected by the problem to get the rewards.

Looks like they need to change the name of this website to: doesnotcare.king.com since they cannot solve this problem. Oh well, challenge is over, I guess we never know what was going on.