I am using the Shopify search and discovery app to add filters the app was working fine and the filters were all showing on the website but now only the price filter is showing and its not even working properly.
Just wanted to comment that we had a similar problem also (price filter not showing) and it was due to the currency being set to one other than the shop’s default currency. This is not currently supported by Shopify. “The price filter doesn’t display for currencies other than your shop’s default currency.”