You will find the following error message there:

Object
0:Object
code:"300007 - INCOMPLETE_MEDIA_ASSET_IMPORT"
title:"The images are currently being processed. Please be patient. Ensure that the submitted images meet our requirements. (Requirements: https://account.otto.market/s/article/Mediendaten) If the status does not change within the next 24 hours, please submit a support ticket in the Partner Helpdesk."
Trigger:"cli: artisan otto:item:marketplace-status"

The processing of images can take a little longer at Otto. If your images are being processed, your variant will be activated shortly.
If you have further questions, please contact Otto Market.