Search inc livesearch not working

Hey team

My dev has setup a users search engine and attempting to use the stock search form in the users page in admin backend but nothing changes. He has asked me to post this:

I setup search engine for users and I want to override admin users search or add new search bar here https://prnt.sc/hcRGuIpvoj8g
I also add this filter https://searchwp.com/v3/docs/hooks/searchwp_in_admin/
but not working. On frontend its working I am using addon SearchWP Live
ajax can you please let me know why its not working for admin…..

Any help would be greatly appreciated. Just so you know we are using the TravelerWP theme from https://travelerwp.com/ if this makes any difference.

Thank you