This is what someone wrote on official Zcoin thread:
About 2+ hours more before hard fork on block 89300. All major exchanges and pools are updated. Please ensure you are on 13.6.2 as soon as possible!
https://zcoin.io/get-zcoin/And after block 89300, mph got 11/26 blocks,
so i think that it was a zcoin bug and not mph unluck...
Update: 28/96 blocks got MPH, its looking good and proportional now...
Max