Beware of u66589

It has been going on for many months, but I have found out this month. A user named "u66589" has been copying and stealing my artwork. The artworks that are involved may have been the works I did before I turned 13, but I can't let someone take credit. It started when I was going out with my family to buy some stuff for my condominium unit, and I was browsing my phone some Chancellor Neighsay art (as always), and I spotted one Gacha Life/Club work. I noticed the artist designed their Chancellor Neighsay and Tempest Shadow the same as I did in my cringe videos 2 years ago.

Here's proof.

Their work (their name in Dribble is YiV Games):

These two were published 9 months ago:

My work:

They also used my Gacha-fied self. I was not even aware of it!

They copied the descriptions of my artworks.

They copied my idea of using signature colors as a frame for my collage, and put a cursive text over the characters. They even called their work the "Reformed Alicorn Group" when none of them are former antagonists.

My work:

Theirs:

They copied my first NeighShadow artwork, just replaced it with Alphabittle and Queen Haven

They copied my first public art:

They also copied whatever this is:

Copied my pink/blue effect and relief I usually use in my NeighShadow artwork:

They also added their artist tag to MY artwork, even when they're not involved in it. They added it like more than a year after the post was published.

Fianlly, they also copied my profile picture, and didn't even bother that the Gacha-fied person is named "Decokelow". They also claimed to be writers, but haven't done any stories or Fanfiction!

I messaged a friend/acquaintance (?NotNoxula?/?Jasper Jean?) of theirs about the situation.
Please, be careful.
- DecoGalileo