Issue with Sale Price field in WooCommerce

Hi,

With the Sales Countdown Timer plugin active, when entering a sale price for any product, it is saved in the backend. Then, when I go to the frontend, the sale price doesn’t appear. When I return to the product page where I added the sale price and load it, the sale price doesn’t exist; the field is blank.

The sale price only disappears from the backend when the product is viewed from the frontend on any page where it appears.

I tried deactivating all plugins, leaving only Sales Countdown Timer active and WooCommerce with a different theme, and the issue persists.