cart css does not work in firefox

hello
i have one site that does not work in firefox
using the simply jigoshop theme – latest, it displays ok in all browsers except firefox, where there are no style sheets called up. I can put the same site on other domains and subdomains and it works ok BUT put it on this one domain and it does not work in FF. I have changed servers and no change in display.
Any suggestions why this domain name is causing issues ?

I changed to 2011 theme and still it does not display in firefox, other browsers display ok
thanks

Details below

### Begin System Info ###

Multi-site: No

SITE_URL: https://www.herbgardenkits.com.au
HOME_URL: https://www.herbgardenkits.com.au

Jigoshop Version: 1.14
WordPress Version: 4.0.1

Platform: Windows
Browser Name: Chrome
Browser Version: 39.0.2171.95
User Agent String: Mozilla/5.0 (Windows NT 6.1; WOW
64) AppleWebKit/537.36 (KHTML, l
ike Gecko) Chrome/39.0.2171.95 S
afari/537.36

PHP Version: 5.4.31
MySQL Version: 5.1.68
Web Server Info: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 DAV/2 mod_bwlimited/1.4

eAccelerator: Disabled
APC: Disabled
OpCache: Disabled

PHP Memory Limit: 256M
PHP Post Max Size: 8MB
PHP Upload Max File Size: 2MB
PHP Max Input Time: 60
PHP Max Input Vars: 1000
WordPress Memory Limit: 96MB

Short Open Tag: Enabled
Allow URL fopen: Enabled

WP_DEBUG: Disabled
WP Table Prefix: Length: 4 Status: Acceptable

Show On Front: page
Page On Front: 4
Page For Posts: 10

Session: Enabled
Session Name: PHPSESSID
Cookie Path: /
Save Path: /tmp
Use Cookies: On
Use Only Cookies: On

DISPLAY ERRORS: On (1)
FSOCKOPEN: Supported

ACTIVE PLUGINS:

Child Theme Configurator: 1.6.1
Jigoshop: 1.14
Wordfence Security: 5.3.3
WordPress SEO: 1.7.1

CURRENT THEME:

Simply Jigoshop: 2.0.11

### End System Info ###

https://www.ads-software.com/plugins/jigoshop/