The site has a good design in my opinion, and as some members have said, this support box is annoying, besides having a very large size is on the left side, and this is very annoying. something else I noticed on your site, this:
PAYMENT METHODS:

you didn't put bitcoin, you don't accept altcoins?
They should put Bitcoin logo or symbol so that people who do visit on the site would able to know that the site accepts bitcoin.
He mentioned earlier that they do accept bitcoin,altcoin might be a good option too but for sure they wont consider it for now.
If you visit the page, you can see the pop up of the Bitcoin deposit because we value and promote bitcoin customers and they deserve to know more, rather than to put an icon.