[Charla]

Try creating it as a function such as something like below or download the free plugin BuddyPress Reorder Tabs
http://www.buddyboss.com/product/buddypress-reorder-tabs/

function re_order_my_tabs() {
  global $bp;
  $bp->bp_nav[‘Activity’][‘position’] = 30;
  $bp->bp_nav[‘profile’][‘position’] = 20;
  $bp->bp_nav[‘notifications’][‘position’] = 10;
  $bp->bp_nav[‘messages’][‘position’] = 80;
  $bp->bp_nav[‘friends’][‘position’] = 70;
  $bp->bp_nav[‘groups’][‘position’] = 60;
  $bp->bp_nav[‘media’][‘position’] = 50;
  $bp->bp_nav[‘settings’][‘position’] = 40;
}
add_action( 'bp_setup_nav', 're_order_my_tabs', 999 );

[Charla]

@Agbams have you set up any Widgets for Buddypress sidebar http://vibethemes.com/envato/wplms/documentation/theme-guide.html#sidebar-setup.

Also check under the created page “Members” and see what sidebar is selected if that option is available.

[Charla]

What plugins are you using?
Version of Buddypress and WordPress Installation?
Are you using custom sidebars?

These answers will help others better help you.

If you are using a custom theme, make sure that you’re using the correct Template Hierarchy explained here. https://codex.buddypress.org/themes/theme-compatibility-1-7/template-hierarchy/

[Charla]

More information is explained here if you’re not using a default WP theme.
https://codex.buddypress.org/themes/buddypress-cover-images/

[Charla]

Used multi-select instead for anyone who wishes to know.