So For the Free Spin it was showing me :
85.063% achieved towards the next +0.00000006 BTC bonus!And then I used today's Premium 7 Spins and it changed to :
75.9033% achieved towards the next +0.00000006 BTC bonus!That was a Huge drop compared to me just doing the usual hourly free spin for 7 hrs

Is this intended or a bug ? Would have thought that FREE PREMIUM SPINS shouldn't affect that percentage to your normal hourly roll

what would happen if the percentage indicator reaches zero? does it mean no more bonuses for the minimum free roll