magento2 – Magento 2: Isuse with elastic search layered navigation

I use custom template SM Market.

It’s about a search engine. Works fine on Luma.
But in my custom theme, Instant Search is not working.
The module does not seem to know to use the search engine from the custom theme and use only base search eninge from Luma Magento.

Does anyone know how I can say that elastic search layered navigation uses the search engine from my theme?