Find customer details in Customers Report layout not working

Hi,
I have the full pro verions of the plugin installed. version 3.5.8. I am trying to find some customers and their reward points information, by typing their email address into the customer search field. However this only seems to work for customers visibly listed below. Our website has approximately 3000 user accounts so most of the data is not visible. Also below the list there are 44 tabs, but if I click on the last visible tab it only shows people whose names begin with ‘F’, so most of our customer ifmration is not vsisible. Is there something which needs to be set up to view the remaining data?

Thanks

Pete.