Execute php in pages?

in one of my wordpress pages (contact) I have some php code,

<form id='contactus' action='<?php echo $formproc->GetSelfScript(); ?>' method='post' accept-charset='UTF-8'>
<fieldset >
<legend>Contact us</legend>

<input type='hidden' name='submitted' id='submitted' value='1'/>
<input type='hidden' name='<?php echo $formproc->GetFormIDInputName(); ?>' value='<?php echo $formproc->GetFormIDInputValue(); ?>'/>
<input type='text'  class='spmhidip' name='<?php echo $formproc->GetSpamTrapInputName(); ?>' />

<div class='short_explanation'>* required fields</div>

<div><span class='error'><?php echo $formproc->GetErrorMessage(); ?></span></div>
<div class='container'>
    <label for='name' >Your Full Name*: </label><br/>
    <input type='text' name='name' id='name' value='<?php echo $formproc->SafeDisplay('name') ?>' maxlength="50" /><br/>
    <span id='contactus_name_errorloc' class='error'></span>
<div class='container'>
    <label for='email' >Email Address*:</label><br/>
    <input type='text' name='email' id='email' value='<?php echo $formproc->SafeDisplay('email') ?>' maxlength="50" /><br/>
    <span id='contactus_email_errorloc' class='error'></span>
<div class='container'>
    <label for='phone' >Phone Number*:</label><br/>
    <input type='text' name='phone' id='phone' value='<?php echo $formproc->SafeDisplay('phone') ?>' maxlength="15" /><br/>
    <span id='contactus_phone_errorloc' class='error'></span>
<div class='container'>
    <label for='message' >Message:</label><br/>
    <span id='contactus_message_errorloc' class='error'></span>
    <textarea rows="10" cols="50" name='message' id='message'><?php echo $formproc->SafeDisplay('message') ?></textarea>

<div class='container'>
    <input type='submit' name='Submit' value='Submit' />


so I installed this plugin

I activate it, and this is the result,

Did I do something wrong?

tried it again at

no dice

I created a page which uses exec-php to execute some php code.
My page seems to not fully load

And I believe the culprit is

How do I even know if that path is even correct?

I have an include folder in my sites root.
Heres the script
 (I placed a 1 there to see if it even works)

I guess the php is working, think the problem is require_once()