Hey there, that? Is very confusing. I don't know anyone on Etsy under the name Crya, nor do I have any sort of shop there.
Sounds more like they're trying to get your brand a bad name, for which I am very sorry and I'll do what I can to clear up any misconceptions if they voiced this publicly. Did they happen to link a design in particular, or any art? Or was it just a sweeping claim? I'd be curious to see.