Today after a small withdrawal from FreeBitco the base prize for free rolls for my account also dropped in half (from 22 sat to 11 sat). I don't know if there's a new policy regarding withdrawals or maybe this is a bug in FreeBitco.

Another strange thing is that soon after the withdrawal FreeBitco showed a message that someone else is playing from my IP address. I restarted my device and the message disppeared, but the base prize was 2 times lower than it should be.