I have this search plugin as well as buddypress installed, for some reason just on this site your search bar will not search through any of my buddypress groups or documents. I have this exact setup on another website with the exact configurations but and it works elsewhere just not on this particular site. And yes i did enable all the budypress searches in the settings part and its still not searching any of the groups.
Can you check the versions of buddypress on both sites? Maybe one of them is an older version?
Are the two searches configured exactly the same way? You should check the grouping options on the advanced search settings panel. I’m not sure that can cause it, but I have seen disappearing results because of that once before.
Is there any buddypress related plugin installed on the websites? Maybe the search is incompatible with that plugin?
If you can’t solve this, can you provide temporary ftp/admin access, so I can do a deeper debugging on the affected site?
Best, Ernest Marcinko If you like my products, don't forget to rate them on codecanyon :)