4 years ago Toyhouse had decided to implement a rule that banned Kinsonas and the making of anything inspired by canon. 

The rule states that: 

"We do not host canon character re-uploads. This includes:

Direct re-uploads of characters that exist in published media
Direct AU versions, re-designs or kinsonas of these characters, who share the same name, personality, and identity"

While I fully understand the banning of re-designs/au versions of existing characters, kinsonas shouldn't be banned however (in my opinion). It limits so much creativity to ban kinsonas, some kinsonas aren't even entirely like the character, it may be a furry cat with the exact same outfit, name, and accessories as the character but entirely the cat design itself is completely original. I understand that the rule may be in place to stop the production of copying already existing characters but kinsonas are almost never done with ill intentions, they are almost always done in good fun.

It may be also worth mentioning Toyhouse also states however, if the character is somewhat completely original it is completely fine to upload: 

"Regarding Canon-Inspired Characters 
We allow canon-inspired characters specifically where it's clear they're an original character who has been inspired by the canon content, rather than AU fanart and fanfic of a canon character. As long as your character has their own name, and a profile/design that reflects they're intended to be individual from the canon character and are not literally the canon character, they should be fine to upload. Adding some background to the character's profile to explain who they are will help a lot to ensure they don't get mixed up.

Don't advertise these as for sale or trade on-site.

We do not moderate visual similarities, but we reserve the right to take down profiles we believe have been made in bad faith. Please do not upload fanart of a canon character with a few letters of their name changed and a copy pasted profile."