I agree. You should get ahold of whoever sold you those birds. I hope you didn't pay a whole lot for them, because if someone told you something other than what everyone here has said then they don't know silkies very well and probably isn't someone you should consider buying from in the future.
Also, I checked the pics of the roo again and his eyes are half closed in both which is not normal unless he was sleeping at the time or getting ready to sleep. Check your birds thouroughly for mites or lice and any other signs of sickness. I would give them little sugar water or buy some vitamin/electrolyte powder for their water to get them perked up again.
I promise you those are cross breeds and they are pet quality. That doesn't mean they can't breed, because as long as they are together the rooster will try. Silkies go broody very often so theres a good chance she'll try to hatch her eggs eventually. Since she has a recessive silkie gene and he has a dominant silkie gene all your babies should be silkie, but finding homes for mix breed birds can be hard, especially if their roosters.