"We will process your personal data as long as you use the Service. We undertake the obligation to erase or anonymize your personal data in case you would not use the Service for a long time (more than 2 years). Still, we may retain your personal data for a longer time as necessary to comply with our legal obligations, resolve disputes and enforce our agreements."
While there is a 2-year inactivity threshold, the broad exception for legal obligations, disputes, and agreements effectively allows indefinite retention.