Not reporting achievement when hunting chest => lvl 7

I already hunted 3 chests, 7, 8 and 9 and my lucky hunter achievement doesn't show anything. i reported it to support but they never answered or solved the problem

[support9]

Did you send your inquiry to kingdomsupport@haypi.com or server support directly? Generally speaking, each inquiry will be attended to within 72hours, please be patient.
You may also tell me when you sent your inquiry and I'll help you confirm the progress.