For what it's worth....I have only .72 Sync....and my Staking is working.
I received my first POS amount of .006 earlier today.

This coin does have a few difficulties...but nothing that can't be overcome.
I see a very bright future for this coin, just wish I had more...I put all I had into it and that's all I could get.
We'll see how it goes....but for now...I think it's doing just fine!