works fine just give it a few
Ok, now I see what's the problem. It's not really synchronized. Wallet says it's synchronized, but is stuck on block 2788, so I can't go to POS phase.
Mine was stuck at 2789. Restarting the wallet didn't help so I had to resync. My two POS blocks showed up as orphans after it synced.
-tb-
You won't lose anything they still stake with the same age.