I believe you should be cautious when pointing fingers at others. Roundcube Webmail and MyRoundcube are two completely separate projects. We are not in violations of European Law.
MyRoundcube is not a "whole store". In our site we offer plugins downloads and documentation for plugins we've worked on as well as third party plugins. Most plugins are delivered through one of our own plugins (plugin_manager) and there is a clear statement in our site. We decided to deliver plugins through plugin_manager for several reasons. There is also a Packages & Pricelist for plugins downloads credits right at the top of our main page. Did you ever read it?
How did you come about associating or determining that Roundcube or MyRoundcube are somehow associated hence they should stop what you called "illegal activities"?
If you have questions or concerns regarding our site, what we do or how we do it, please feel free to contact us at any time. There is a contact form in the site that you can certainly use.
PLEASE BE ADVISED: Communicating with us requires READING.