Recognize non WordPress pages (subdirectory)

I am trying to get wordpress to recognize an index.php file within a sub directory. No matter how I write my htaccess file (in either directory) I simply can not get WordPress to recognize it. Does anyone have any suggestions. I am going nuts. I have even tried simply deleting the htaccess files to no avail.

File Structure
Wordpress: /public_html
Boxbilling: public_html/boxbilling

My WP htaccess file is the standard default file generated with install
Below is my Boxbill htaccess file

Options -Indexes
Options +FollowSymLinks

RewriteEngine On

## Begin - Rewrite rules to block out some common exploits.
# If you experience problems on your site block out the operations listed below
# This attempts to block the most common type of exploit <code>attempts</code>
#
# Block out any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
# Block out any script that includes a <script> tag in URL.
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR]
# Block out any script trying to set a PHP GLOBALS variable via URL.
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
# Block out any script trying to modify a _REQUEST variable via URL.
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
# Return 403 Forbidden header and show the content of the root homepage
RewriteRule .* index.php [F]
#
## End - Rewrite rules to block out some common exploits.

### re-direct to www
#RewriteCond %{HTTP_HOST} ^yourdomain.com
#RewriteRule (.*) http://www.yourdomain.com/$1 [R=301,L]

# If you are receiving "Internal Server Error" message
# Tune path if installing into subfolder, ie "RewriteBase /boxbilling/"
 RewriteBase /boxbill

# This line is for Windows Environment when API is giving authorization error
RewriteRule .? - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^(.*)$ index.php?_url=/$1 [QSA,L]

<FilesMatch "\.(htaccess|htpasswd|ini|log|sh|inc|bak|phtml|sql)$">
    Order Allow,Deny
    Deny from all
</FilesMatch>

<IfModule mod_headers.c>
    # MONTH
    <FilesMatch "\.(flv|gif|jpg|jpeg|png|ico|swf)$">
       Header set Cache-Control "max-age=2592000"
    </FilesMatch>

    # WEEK
    <FilesMatch "\.(js|css|pdf|txt)$">
       Header set Cache-Control "max-age=604800"
    </FilesMatch>

    # DAY
    <FilesMatch "\.(html|htm)$">
       Header set Cache-Control "max-age=43200"
    </FilesMatch>
</IfModule>

• This topic was modified 6 years, 2 months ago by rlbunch37840.

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