Hello,

There is no option to remove the Sales label from the product. I can just give your custom CSS.

Please add this code to the Theme Settings > Custom CSS > Global:

body .labels-rounded .onsale { 
display:none; 
}

If the code does not work, please provide a page URL with the products on sale.

As for the tabs, please try to find a plugin. Tabs are Woocommerce functionality and our support does not cover Woocommerce customization.

You can rewrite all theme and plugin texts via PO file in WordPress. Here is a video tutorial that should help you rewrite your website texts with a Loco Translate plugin https://www.youtube.com/watch?v=D3NsDdMzsls&list=PLMw6W4rAaOgKKv0oexGHzpWBg1imvrval&index=3

Best Regards