Why product listing stays in “Under review” for long time?

This is dependent on the Marketplace such as Lazada and Zalora where listed products will go through the QA check before the product gets pass (Live) or fails to list. There could be a delay in the Marketplace QA checks during campaigns.

We hope the details above were helpful for you. Please feel free to share with us if require further assistance and will be happy to take it up.