Plugin not working

The plugin is not working. I have a field named ‘Referencia’ that have a fake ID to show into the frontend page. I have more than 1200 properties in a CPT with this field. So i need to search a certain property with this field named ‘Referencia’ but i cant.

Attached captures:
Properties panel with all properties
https://gyazo.com/b43815f198c27986ac504beba25446d2
Inside a property with ‘Referencia’ field fill with SI1137
https://gyazo.com/0f17009ff877149cd2f91abf2dd24542
The search with string ‘SI1137’ with empty result:
https://gyazo.com/333d1b1e3f5681fa0299013794ea8d30
ACF Better search Settings:
https://gyazo.com/f73a9aedeeaa77610d381344c6602580
ACF Field Settings:
https://gyazo.com/079e370508e18e1a6f225cddf7fb2402

Wordpress version: 5.0.3
ACF Better Search version: 3.1.2
ACF Pro version: 5.7.12

I hope your answer ASAP. We love your plugin. Regards!