WPTouch does not work with WP Super Cache

I installed WP Super Cache and think I will like it very much. Problem is, it does not work with WP Touch, my mobile phone plugin. It gives me this message:

<div class="error"><p><strong style="color: darkred">WPtouch: WP Super Cache needs to be configured to work correctly with WPtouch.</strong></p><p>Fixing this issue prevents cached desktop pages being served to mobile devices and vice-versa.</p><p>Once fixed, this message will be dismissed automatically. Until fixed, <em><strong>WPtouch will not be shown</strong></em> to mobile visitors, and cannot be previewed.</p><p>To fix the issue, follow our <a href="https://support.wptouch.com/support/solutions/articles/5000537668-configuring-cache-plugins-for-wptouch?utm_campaign=cache_smash&utm_medium=web&utm_source=wptouch-free" target="_blank">step-by-step setup guide</a> on support.wptouch.com</p></div>

If I go to that page it does not exist.  So, my questions are 1. Can you help me fix it? or 2. Is there another mobile phone plugin that will work well with WP Super Cache? THANK YOU!

The page I need help with: [log in to see the link]