Image synchronization problems by API REST

Hello,
I’m having trouble syncing by API REST.
Images are synchronized but not associated with the product.
We have connected our web with store management program which we are using at our store.
For this, we have used a API REST created by Woocommerce.

Now, everything upload perfectly BUT the images aren’t attached to product.

This isn’t happening in others webs with similar caracteristics.

We are using “JMT Autentication for WP-API” pluging for images upload.

Could you help me?
Thanks.