Questions, bug reports, and feature requests go to hello@pantopie.studio. We are in France and usually reply within a few days.
Check the changelog and the roadmap first: your question may already be answered.
For a bug report, a few details help us a lot: your operating system, your browser, and what you were doing when it broke. For a feature request, telling us about the problem you are trying to solve helps us point the right way.
For business and licensing, use the same address and put "licensing" in the subject line. For the LumiDSL language, see lumidsl.com.