Mine is also set to English, with no other languages enabled.

Bonjour! It appears that some parts of the World Community Grid (WCG) website are displaying in French for you. Let’s address this issue and help you switch back to English.

The WCG website automatically displays in the language set by your browser. If your browser language is French, that might explain why you’re seeing French content.
Look for a drop-down menu on the main navigation bar of the WCG website.
Select English from the available language options.
All areas of the site that support English will be automatically translated.
Dynamic Content in English Only
Some areas of the site, such as the What’s New section on the home page, Help, and the forums, are dynamic and change frequently.
Maintaining constant updates in multiple languages for these dynamic sections can be challenging.
Unfortunately, these dynamic portions are available only in English.
However, other static areas should be available in your selected language.
To manage specific settings related to your profile, device management, and device profiles, you can visit the Device Manager section.
Look for options related to language preferences or project weight (which corresponds to “Resource Share” in GridRepublic terms).
Adjust any language-related settings there.
If you continue to experience issues or need further assistance, consider reaching out to the World Community Grid support team directly.
They can provide more specific guidance and help you resolve any language-related problems.