fix user update new field

api/serializers.py

@@ -67,6 +67,7 @@ class UserSerializer(serializers.ModelSerializer):
             bracket_match_format_preference=validated_data.get('bracket_match_format_preference'),
             group_stage_match_format_preference=validated_data.get('group_stage_match_format_preference'),
             loser_bracket_match_format_preference=validated_data.get('loser_bracket_match_format_preference'),
+            loser_bracket_mode=validated_data.get('loser_bracket_mode'),
         )
 
         self.send_email(self.context['request'], user)

tournaments/admin.py

@@ -23,7 +23,7 @@ class CustomUserAdmin(UserAdmin):
             'summons_message_body', 'summons_message_signature', 'summons_available_payment_methods',
             'summons_display_format', 'summons_display_entry_fee', 'summons_use_full_custom_message',
             'match_formats_default_duration', 'bracket_match_format_preference', 'group_stage_match_format_preference',
-            'loser_bracket_match_format_preference', 'device_id'
+            'loser_bracket_match_format_preference', 'device_id', 'loser_bracket_mode'
         ]}),
         ]
     add_fieldsets = [