1. how can i control the "sale" badge: I see that you could change successfully this text
the problem with this is the method that it uses...
I installed a dynamic price plugin. the budge is not working for it well. its always shows 0% discount.
you can see it here: http://zemer.s47.upress.link/product/סופר-אינקה-אפור/
2. "New" product badge: You can change in Loco translate > Theme
My q was not how to translate it but for how long the budge "new" stay? until a new product upload? for a time?
3. The price slider is not working well: Can you take the screenshot for this point then I will help you to check
you can see it here: http://zemer.s47.upress.link/shop/
try to play with the price filter slider on the sidebar...
Regard
Asher