Plugin version 1.9.0+2834 is now available for download here: Site Search ONE 30-day trial
The WordPress Dashboard now has a Global Settings page for Link format, Widget CSS, Search page CSS, and Document CSS. Your Post and Pages can inherit or override any or all the Global Settings, full details are in the updated User Guide (PDF).
The mechanism for displaying search results has changed to avoid a ‘rest_cookie_invalid_nonce’ error message that was prevalent on sites that use caching plugins. The plugin no longer uses WordPress nonce tokens.