Vertex AI Search for Commerce : User events not reflected in dashboard despite successful import

Hi, I am using Vertex AI search for commerce and I am encountering a weird behavior.

I uploaded detail-page-view user events days ago (more than 48 hours), with a successful mapping in the UI :

However when trying to train models, nothing is found.

Also, in the data quality panel, despite checks being marked as non compliant, I do not have any violation sample outlined. Also, in the user event tab (Data → User Events) almost no data can be found. It just feels buggy.

Has anyone ever encountered this ? What could be the solution ?