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Be unable to product into the New Arrival and Most popular tab

With the New Product tab, you need to set the value of "Set Product as New From" and select the correct category to display in the tab, as you can see:

The Most Popular tab displays the products on sale. You can set sale price as this snapshot: 

For example this product: 

https://qa.contabilista.com.br/savvy-shoulder-tote.html