The site’s documents explained

DevKG has five main policy documents:

• Terms of use: your rights and responsibilities as a user.
• Publication and moderation rules: what you may post, checks, complaints, and appeals.
• Paid services offer: terms for paid publications and other services.
• Refund Policy: when and how refunds work.
• Privacy Policy: which personal data is collected, why it's used, and how long it's kept.

Each document lists its version and links to previous versions. This article is only a summary; the official documents take precedence.