If your onsale filter is not working, check in wp-admin > Settings > Super Speedy Filters > URL Structure tab.
Scroll down and you’ll find three settings related to the onsale configuration.
- Pretty Permalinks – you can have /onsale/product-category/toys/ or /product-category/toys/?onsale=1
- On sale slug – you MUST enter something here – we default it to ‘onsale’ – do not delete it. If you wish you can alter it to your own language but it must have a value.
- Run SQL to add/update onsale flag – this needs to be run ONCE and then we will maintain it for you.