Check if the "isp_ignore" attribute is included in the existing search bar. To do that, go to your site, and anywhere on the page right click and choose "inspect". Then click anywhere on the code and use "ctrl+f" on windows or "command+f" on Mac to search for "isp_ignore". If this exists, Autocomplete will not power up as you are ignoring it with this attribute.
Check that the snippet, located on the Autocomplete section in your dashboard, is correctly included inside the <head> section of the site.
