The Content Management System is an Open Source Software under the General Public License (GPL). The CMS can be implemented exempted from charges, which means without charging license costs. There is no difference whether a company, an internet agency or a private person uses the CMS for its own purposes.
Contenido is subject to copyright and therefore copyright of four for business AG. Renaming or rebranding is illegal. Replacing logos in the backend, deleting copyright information in the source code are counted among.
The CMS itself must not be resold for money. As an agency or service provider, you are certainly allowed to charge your work around Contenido, independent from whether you install the CMS, implement a website or provide support. The CMS itself has to be exempted from charges.
four for business as copyright owner will not assume liability for any losses or claims, which result from the implementation of Contenido. You cannot claim demands against four for business. four for business is not responsible for any work done by other service providers in connection with Contenido.