Hello, all.
This probably sounds a bit silly, but I'd appreciate views as I'm autistic and very bad at this sort of thing.
About 12 years ago, my dad died and I wrote two very long fanfictions from a well-known wizarding tale, to help me cope. One had an unusual name and an unusual plot, straying reasonably far from the original stories. It was well-received and I was happy.
I left it on the site, life moved on, but recently I saw someone had taken the title, entire plot idea and even some phrases I used (it is distinctive and it is definitely taken from my story) , changed them around and is selling the books and idea as their own.
What would you do? Should I do anything, or can I? I feel upset that someone did this. It doesn't seem right.
Thanks