Bought a WooCommerce plugin from CodeCanyon once. It was of extremely bad code quality (despite having a rating of about 4.5 from almost 50 reviews). Also it did not have the functionality we needed. So I wanted a refund (within 14 days).

But I did not get my money back, but instead the money was add to my Envato account. So I could spent it on other CodeCanyon products - which I had no interest in. I wrote half a dozen emails to them, all being ignored.

This is something that's illegal in the EU. Money back means money back, and you have a legal right for this. Since CodeCanyon / Envato are based somewhere in Asia (I think it was Philipines), I just gave up. Also it was only about 40 € or so. But still it makes me that angry today that I feel writing this comment in order to warn others.