Off Canvas blank

I'm not able to get responsive system to work.
Off canvas is blank and dropdown doesn´t show child items
Can you help me?

url: www.silver-storm.com
I'll PM you usr and password
Thanks in advance

Hi Programax,
Thanks for contacting us and choosing our product!
Please check the site, I could not enter your site, I in Vietnam can you block my IP. Thanks.
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Best Regards,
-- NT--

I've sent you a PM

Hi Programax,
Really sorry I can not access your site www.silver-storm.com/ , please check IP, can you have blocked my IP.
*********
Best Regards,
-- NT--