...i know i'm late, but seems like they have [furaffinity account](https://www.furaffinity.net/user/yanchek/) which is still active!
you can try to contact them there, they've even wrote their [commissions price sheet](https://www.furaffinity.net/journal/9154141) in English!
i've found the FA link on their vk page, but you can still try to contact them through vk just to be sure!