Cron backup to email not executing

I have installed this plugin and can manually backup (to host and also backup sent to email), manually optimize and repair the database, however, it’s not running the scheduled backup to be sent to my specified email address. It has worked using my host in the past. I have installed wp control as suggested by Lester, and it does confirm that the scheduled jobs are set. I’m wondering if it’s an htaccess or conflicting plugin issue. Currently, I have installed the following list of active plugins:

Plugin List Part 1
Plugin List Part 2

My htaccess

# Use PHP5.4 as default
AddHandler application/x-httpd-php54 .php
RewriteEngine on

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

# Stop spam attack logins and comments

<IfModule mod_rewrite.c>
	RewriteCond %{REQUEST_METHOD} POST
	RewriteCond %{REQUEST_URI} .(wp-comments-post|wp-login)\.php*
	RewriteCond %{HTTP_USER_AGENT} ^$
</ifModule>

# disable directory browsing
# For security reasons, Option all cannot be overridden.

Options +Includes
# For security reasons, Option followsymlinks cannot be overridden.
#Options +FollowSymLinks -Indexes
Options +SymLinksIfOwnerMatch -Indexes

# Protect htaccess and wp-config

<Files ~ “^.*\.([Hh][Tt][Aa])”>
order allow,deny
deny from all
satisfy all
</Files>
<files wp-config.php>
order allow,deny
deny from all
</files>

RewriteCond %{HTTP_HOST} ^mywebsite\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.mywebsite\.com$
RewriteRule ^/?$ "http\:\/\/www\.mywebsite\.org\/" [R=302,L]

ExpiresActive On
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/jpeg A2592000

<IfModule mod_deflate.c>
	<IfModule mod_filter.c>
		AddOutputFilterByType DEFLATE text/plain text/html application/x-httpd-php-source
		AddOutputFilterByType DEFLATE text/xml application/xml application/xhtml+xml application/xml-dtd
		AddOutputFilterByType DEFLATE application/rdf+xml application/rss+xml application/atom+xml image/svg+xml
		AddOutputFilterByType DEFLATE text/css text/javascript application/javascript application/x-javascript
		AddOutputFilterByType DEFLATE font/truetype application/x-font-ttf font/opentype application/x-font-otf
	</IfModule>
</IfModule>

http://wordpress.org/plugins/wp-dbmanager/