It seems like you've added a new search engine to Firefox Focus, but you're encountering an issue with custom search suggestions. The problem arises from this search engine using different endpoints for the search string and auto-suggestions. The typical endpoint for the search string is "/search/?q=%s," while the auto-suggestions are located at "/api/autosuggest?q=%s." To address this issue, you may want to contact the Firefox Focus support team or community forums for guidance on how to configure custom search suggestions for this specific search engine. They should be able to provide you with a solution or workaround for integrating these distinct endpoints effectively.