Is Gumroad illegal?

I've been hearing some whispers that Gumroad, the popular online platform for selling digital products like e-books and software, might be operating illegally. But I'm not entirely sure if that's the case. Can you clarify if Gumroad is indeed breaking any laws or if these rumors are just baseless accusations? I'm particularly interested in knowing if there are any specific regulations or legal frameworks that Gumroad might be violating. As a business owner considering using Gumroad for my own digital products, I want to make sure I'm not putting myself at risk by partnering with a platform that's not operating within the bounds of the law.