Offer a managed resolution desk that collects evidence, classifies each incident, prepares platform-specific submissions, tracks deadlines, and maintains an escalation log until resolution or exhaustion of available remedies. Begin with account restrictions, stuck refunds, order exceptions, and broken buyer communication on a limited set of marketplaces, using human case managers and standardized playbooks.

Marketplace policy changes and communication restrictions increasingly force users into formal support processes. Sellers operating across several platforms have more exception cases to manage but little leverage or operational support.