Shortcodes not working

I used this link https://www.jomres.net/manual/developers-guide/305-shortcodes ,[jomres:en:GB] works fine and try to add following shortcodes but not working.
[jomres task=”search”]
[jomres task=”search” params=”&country=US”]

https://ww.wp.xz.cn/plugins/jomres/