I don't understand what he talk about and his reason for doing this because the mod still work perfectly fine.
He gave credit, it was normal to do it
But why making a duplicate mod of one who already work fine ?
I m sure that he didn't even contact you to have your permission to do this with your work...

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3364403856

I'm thinking that it's important to report stuff like this, hope you understand.

Note: He did this with many other mod, copy past the thumbnail and the name and just add "Fixed by JIKUMIK" after it.
It's very suspicious