VKI Austria published a consumer warning about Cleverbuy, a German online platform for buying and selling used electronics, after documenting a systematic pattern of complaints including delayed or withheld payments, deleted customer communication records, and unilateral price reductions without proper notification. The European Consumer Centre network recorded over 300 complaints while the German consumer association (vzbv) documented more than 900 complaints between 2024 and 2025. VKI has issued an EU-wide CPC (Consumer Protection Cooperation) warning and provides affected consumers with actionable next steps for seeking payment.