Hello
The Snowflakes are no transfer unless they receive the permapet vita this will make them transfer as well.
I think because they became available via the advent calendar the 24-th of december they can't be older than 2 days old for those who birthed them right away.
From the age 7 they can receive the more expensive permapet not when they are kittens.
They need to reach the age of 120+, to be able to permapet them for a lower price, and making them transferable this way.
I hope you can find your desired Snowflake kitties in time I think they are so pretty too
Good luck,
Kay