Debug errors

[nadalsol]

Hello,

The plugin seems to be working fine though is launching 3 errors when I set WP_DEBUG mode to true in my WordPress wp-config.php file:

Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method KM_Filter::output_analytics() should not be called statically in /Users/username/Sites/wordpress/wp-includes/plugin.php on line 525

Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method KM_Filter::identify_comment_user() should not be called statically in /Users/username/Sites/wordpress/wp-includes/plugin.php on line 525

Notice: Undefined index: comment_author_email_1d9d9ced2f96c1d209ee1d8157fc50af in /Users/username/Sites/wordpress/wp-content/plugins/kissmetrics/kissmetrics.php on line 346

I'm using...

• WordPress 4.4.2.
• KISSmetrics WordPress Plugin 0.0.2 (downloaded from http://support.kissmetrics.com/integrations/wordpress).

Is this something that can be easily fixed?