Looks like it is working now - BUT you might want to check your SSL
http://www.comodogroup.com/low_assurance_explanation.html
I got this warning from my site checker when I entered your https cart.
__________________
Carl Tice
X-Cart 4.6.6
X-Payments 3.0
ReBOOT 3.4.1
PHP 5.6.30
MySQL 5.6.35
Linux 2.6.32-042stab120.18
ionCube PHP Loader v4.7.3
Perl 5.10.1
|