I'm staking a bunch of PIVX and getting 2.49 PIVX as a reward on current wallet version, but a friend of mine is staking with an older wallet and getting stake rewards of 1.7PIVX - is that because he's on the older wallet or are these stakes actually on a different chain?   Cos he keeps telling me how often it's staking I'm wondering if it's actually broken.  I've told him to upgrade but he thought it might break his good luck streak and hasn't yet.