BuddyPress.org

That did it! Changed over to legacy files and now I can place and modify the profile.php in my child-theme (another not-so-nice name for describing a regular wordpress theme).

Small suggestion: make this knowledge (bp-legacy over bp-default) a BIG note in the theme development documentation of this site!

Thanks @danbp for your question which prompted me to dig further and @shanebp for confirming my improper use of bp-default.

Thanks for your reply @danbp! I got the profile.php from bp-default. I had previously placed bp-default custom edit.php and change-avatar.php inside the child theme at single/profile folder without a problem.

Yes, I use many custom functions in my functions.php file but I have not made use of bp-custom.php.

I also have a custom template titled plugin-buddypress.php in my child-theme folder above the buddypress folder.

I disabled all the profile plugins (pics, follow, cover, conditional field groups) and commented out all functions acting on Buddypress in my functions.php file. This did not make a difference! I still have a blank loop with the profile.php added to my child theme.

//EDIT
And I am running BP 2.3.2.1 on WP 4.2.4

I tried with TwentyFifteen theme, and it still didn’t work with this theme. So, I think the problem is not theme related. Today an update suggestion came about WordPress 4.3, and after I install the new one, now it works 🙂

okay, This is almost done, but is really rare, not everything works as it should.
First of all, this is not a pluggin, I am writing all these code in bp-functions.php in my bududdypress folder within my theme folder. (this may be my problem).
Step by step:
1st Problem setup globals is not working as it espected:

define( 'BP_NOTIFIER_CELBIRTHDAY_SLUG', 'celbirthday_notifier' );
function celbirthday_notifier_setup_globals () {
	global $bp, $wpdb;
	$bp = buddypress();
	
	$bp->celbirthday_notifier = new stdClass();
	$bp->celbirthday_notifier->id = 'celbirthday_notifier'; //I asume others are not going to use this is
	$bp->celbirthday_notifier->slug = BP_NOTIFIER_CELBIRTHDAY_SLUG;
	$bp->celbirthday_notifier->notification_callback = 'celbirthday_notifier_format_notifications'; //show the notification
	
	$bp->active_components[$bp->celbirthday_notifier->id] = $bp->celbirthday_notifier->id;

	do_action( 'bp_setup_globals' );
}

This function is not doing nothing unless I call it directly:
celbirthday_notifier_setup_globals ();
I Know this is not the proper way, but it is the only way I found to make it run.
Does anyone know why it does not work properly?

Continue with the notification:

//Format notifications
function celbirthday_notifier_format_notifications( $action, $item_id, $secondary_item_id, $total_items, $format = 'string' ) {
 if ( 'new_birthday' === $action ) {
	if ( (int) $total_items > 1 ) {
	      
	    if ( 'string' === $format ) {
			$famoso_name =  get_the_title( $secondary_item_id );
			return apply_filters( 'celebrities_multiple_verifications_notification','Say Happybirthday to '.$famoso_name);	  
		  }
      } else {	 
      if ( 'string' === $format ) {  //falta definir $famoso_link y mas 
	   $famoso_name =  get_the_title( $secondary_item_id );
	  	return apply_filters( 'celebrities_single_verifications_notification','Say Happybirthday to '.$famoso_name);
         // $return = apply_filters( $filter, '<a href="' . esc_url( $famoso_link ) . '" title="birthday anounce">' . esc_html( $text ) . '</a>', (int) $total_items, $text, $famoso_link );
		// $message = apply_filters( 'bp_activity_at_message_notification_message', $message, $poster_name, $content, $message_link, $settings_link );

	} } }
 do_action( 'celbirthday_notifier_format_notifications', $action, $item_id, $secondary_item_id, $total_items ); 
return false; }

ok, this format function is working right, although I have to do some more work. After it, I have two more functions (mark and delete notifications) wich are also working fine.

//mark notification
function celebrities_mark_screen_notifications() {
	global $bp;
	
	bp_notifications_mark_notifications_by_item_id( $bp->loggedin_user->id, $bp->celbirthday_notifier->id, 'new_birthday', $secondary_item_id = false, $is_new='0');
}
add_action( 'bp_notifications_screen', 'celebrities_mark_screen_notifications' ); 

and…

function celbirthday_notifier_remove_screen_notifications() {
	global $bp;
	
	bp_core_delete_notifications_for_user_by_type( $bp->loggedin_user->id, $bp->profile->slug, 'new_birthday' );
}
add_action( 'bp_notifications_screen', 'celbirthday_notifier_remove_screen_notifications' );
add_action( 'xprofile_screen_display_profile', 'celbirthday_notifier_remove_screen_notifications' );

As I say, this works fine, but a I am not sure if I need the second “add_action” (xprofile screen).
And finally, to add notification I use this code (which is not working):

//Adding notification
function buddypress_celebrities_add_notification() 
{    
if ( bp_is_active( 'notifications' ) )
 {  

	$fecha_act = date("Y-m-d");
	$res_birth = $wpdb->get_results( "SELECT wp_best_favs.user_id, wp_postmeta.post_id
					FROM wp_best_favs
					LEFT JOIN wp_postmeta ON ( wp_postmeta.post_id = wp_best_favs.celeb_ID ) 
					WHERE (
					wp_postmeta.meta_key =  'fecha_na')
					AND (DAY(  <code>wp_postmeta</code>.<code>meta_value</code> ) = DAY(  '$fecha_act' ))					
					AND (MONTH(  <code>wp_postmeta</code>.<code>meta_value</code> ) = MONTH(  '$fecha_act' ))
					");
			$res_birth = array_filter($res_birth);  
			$matriz = objectToArray($res_birth);  //I use this function to convert objet array to simple array
			if(count($matriz)==0) 
			{ 
				// está vacío 
			}  else { 
				global $wpdb;
				$bp = buddypress();
				$current_time = bp_core_current_time();
				foreach ($matriz as $v1) {
					
					$famoso_id = $v1[post_id];
					$receiver_user_id = $v1[user_id];
						
				$args = array(
					'user_id'           => $receiver_user_id,
					'item_id'           => $famoso_id,
					'secondary_item_id' => $famoso_id,
					'component_name'    => $bp->celbirthday_notifier->slug,
					'component_action'  => 'new_birthday',
					'date_notified'     => $current_time,
					'is_new'            => 1,
	       				 );
			 bp_notifications_add_notification( $args );
		}
	}
 } 
} 
do_action( 'bp_init', 'buddypress_celebrities_add_notification' ); 

So this is my bigger problem:
Add notifications (function buddypress_celebrities_add_notification()) is not working.
I am pretty sure this is because I am not hooking properly, but I tried so many hooks and none of it did work.
I Know the code is fine because if I comment the two first lines and the two last lines (so I run the code not as a function) the notifications are being added to database.

Anyone can help me, to find a proper hook, or just pointing me in the right direction.
Thanks in advance.

Never mind, i figured it out.

add this

<span class="create-a-group"><?php echo bp_get_group_create_button() ?></span>

to groups.php and place it in a child theme located in members/single/groups.php

I added the code before <div class="item-list-tabs no-ajax" id="subnav" role="navigation">

You can mark this as resolved

Okay, now I’m getting somewhere, This is how I’ve set it up,

wp-content/themes/enfold(My theme)/community/members/single/notifications.php

It seems to be overriding the original file as it should be, the only problem now is that notifications disappear entirely(when clicking on the notification tab on the profile, there’s just a white space where the information should be popping up)

This is how I implemented your code,

switch ( bp_current_action() ) :

// Unread
case 'unread' :
bp_get_template_part( 'members/single/notifications/unread' );
break;

// Read
case 'read' :
bp_get_template_part( 'members/single/notifications/read' );
break;

// Any other
default :
bp_get_template_part( 'members/single/plugins' );
break;

bp_is_my_profile()
endswitch;

Now I’m not much of a coder, so I wouldn’t doubt that I’ve misinterpreted what you meant by “wrap the current markup”

Regardless, thanks for your help so far,I was lost, now I’m less lost. 🙂

No i not in my navigation i was talking about on the widget for my them login. Nother of that works for my situation. I am using the plugin My Theme Login and I want to put it there.=

i deactivated all the plugins and still the buttons don’t display at this them only. when i change to other themes buttons are ok. i am considering how to hack this theme so as to have this 3 buttons in my theme

Found the culprit and the fix here in case anyone encounters the same issue: https://codex.buddypress.org/themes/buddypress-companion-stylesheets/#existing-styled-themes