Board Thread:Dragon City Gameplay Questions & Answers/@comment-4856348-20130827021620/@comment-14485493-20130829124724

I experience the same problem with ALL crystals.

If I build them on the computer, I can't complete them there.

But I can complete them on the iPad/iPhone, and the will work, though they still have "Food icons" or "Money icons" hanging over them when I open it on Facebook.

The workaround is to build AND complete them from a mobile device. Then they will appear normally on FB too.