The same thing has been happening to me! There will nothing nothing wrong with my fandom ocs, yet they will be removed and marked as similar. I love my ocs and I want to keep them. :/

kinsonas go against toyhouse guidelines, if you check it. it’s rule 5.1

5.1. Canon Characters

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

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.