BuddyPress.org

For some reason, every time I attempt to add a user No image, it removes all the users alphabetically below and inclusive of the new entry No image “User list post addition”. I cannot therefore update the extended profile or access any users under this entry. This has previously happened, so I removed the buddypress pluggin and reactivated it an this allowed me to update the entry and reinstated the missing users. Although when I have tried this work around this time, it is generating a 500 Internal Server Error.
Subsequently I have downloaded the “Health Check” plugin, as it has highlighted a couple of errors:

-The loopback request to your site failed, this may prevent WP_Cron from working, along with theme and plugin editors.<br>Error encountered: (0) cURL error 28: Operation timed out after 10000 milliseconds with 0 bytes received
-Testing gears: The loopback requeshttps://core.trac.wordpress.org/newticket#t returned an unexpected status code, 500, this may affect tools such as WP_Cron, or theme and plugin editors.

I have also completed a troubleshoot, removing all the plugins. At this point I was able to add users. I think activated the gears plugin first, which then cause my site to crash out- error 500.