Blog Page Content "invisible" in IE

start with sorting out html markup errors.

documentation: https://codex.www.ads-software.com/Validating_a_Website

Looks like your frmFeedback form ouputs:

<script language="JavaScript">
    <!--
    function validateForm()
    {
        if(document.frmFeedback.name.value == 'Name')
        {
            alert("Name cannot be left blank");
            document.frmFeedback.name.focus();
            return false;
        }

      ...

    }
    </script>

But never ends the comment, therefore all content following it is commented out in older (IE) browsers.

Try removing the frmFeedback plugin and your content should be back.

Here’s a link
https://www.javascripter.net/faq/hidingjs.htm