Hello Torben,

Please try the following code:

add_action( 'groups_remove_member', 'cci_auto_unsubscribe_forum', 10, 2 );
add_action( 'groups_leave_group', 'cci_auto_unsubscribe_forum', 10, 2 );

// function triggered when user leaves group
function cci_auto_unsubscribe_forum ( $group_id, $user_id ) {
	// checks to see if there's a user ID
	if( !$user_id ) return false;
	// Get's an array of forum IDs for the group
	$forum_ids = bbp_get_group_forum_ids( $group_id );
	// checks to see if there is a forum ID
	if ( !empty( $forum_ids ) ) {
	// gets the first value from the array, assuming there is one forum
	$forum_id = array_shift( $forum_ids );
	}
	// subscribes user to forum
	bbp_remove_user_forum_subscription( $user_id, $forum_id );
}

Let me know if it works or not.

Regards
Ravi

Hello Sherman,

Thank you for posting here. As you are using BuddyBoss activity shortcode they are in a better position to assist with this issue. Please try contacting BuddyBoss support for this issue.

Regards
Ravi

Hello Pooria,

We have released the newer version of the plugin. Please download the latest version and give it shot.

Regards
Ravi

Hello Marcel,

Thank you for the acknowledgment. I am glad that the issue is resolved. Please do share the changes you have done to make things work correctly.

Regards
Ravi

Hello Pooria,

Thank you for the acknowledgment. Please also let me know if you are using “BuddyPress Block Users” or BuddyBoss Blocking member feature.

Regards
Ravi