Is the product published? Only products with the status Published are synced to Shopify. Drafts and products in review stay in NEXERA. Only an administrator can publish.
Is the store connected? Check under Channels, Shopify whether your store shows as connected.
Does the product have more than 100 variants or more than 3 options? Shopify does not accept that; the product is rejected. Split the product.
Did anything actually change? NEXERA only syncs products whose data changed since the previous sync. No change means nothing to do, and that is normal.
Check the sync overview under Channels, Shopify for error messages per product. It shows exactly what Shopify reported back.
Variant images are linked after the product itself; for large products this can take a moment.
Check whether the images are linked to the right variants in NEXERA.
Still stuck?
Email [email protected] with the product name or SKU. We will look into the sync logs with you.