False positive malware block by avast internet security

Since many days our company website http://www.travelbss.com is blocked by avast Internet Security for no apparent reason.

3 of my work computers uses avast Internet Security and our company website is blocked as malware in all of them.
However, 2 of my work computer has norton and 1 computer has kaspersky installed, in all these machinces the website opens without any issues.

I have 3 avast Internet Security licences for my work computers, which has now become cause of my loss.

How can one unblock the domain www.travelbss.com

Bulk of my work happens through this website & its blocked by avast, it’s annoying.

Thank you.

http://sitecheck.sucuri.net/results/www.travelbss.com/
http://zulu.zscaler.com/submission/show/72b6b970e2a871c7a97515a201e4d187-1360839655

You can report a possible FP here: http://www.avast.com/contact-form.php?loadStyles