Can’t collect diamonds – Dig Tycoon - Idle Game Review

I’ve been playing this game for 4 days my city is getting built fast and all the little buildings that’s built has diamonds on them. For some reason I can’t even collect them. It’s making me angry because it seem like all I can do is upgrade my 3 little things in the bottom.
Review by Nico Da Kota on Dig Tycoon - Idle Game.