Even their legal documents (terms of use, DPA, privacy agreement) just lists them as

    Eden AI
    France
    contact@edenai.co

The terms of use start with the words "Eden AI is a French company" but as far as I can tell there is no registered French company with that name. There is a likely unrelated British company of that name, and a French "Eden AI SAS" that was closed five months ago that helped companies create and execute workshops

Edit: looking more closely, it's the company orginally known as "Datagenius SAS" based in Lyon, France. They changed their name to "Eden AI SAS" in 2022 (or maybe it's an alternative name? I am not too familiar with how this works in France), and their datagenius homepage links to the submitted page. https://www.datagenius.fr/ If anyone wants to send them a letter, the registered address of the company is 142 Rue De Crequi, F-69003 Lyon

That took slightly more work to figure out than I would expect from a website that has the word "transparency" in the headline, but at least they do exist

It's not a German website, so it doesn't need an imprint

Out of curiosity, what are "general basic standards for imprint and responsible persons and firms behind it" ?

What I find interesting is that initially, I thought this was some low effort slop project, but apparently it has existed for 4 years already!