Blacklisted:
http://zulu.zscaler.com/submission/show/91d0f372eea0e129980907cfd5b30199-1432046529
http://urlquery.net/report.php?id=1432046745863
http://urlquery.net/report.php?id=1432046756682

Certificate and other problems:
https://www.ssllabs.com/ssltest/analyze.html?d=tecnoayuda.cl

DNS problems:
http://dnscheck.pingdom.com/?domain=www.tecnoayuda.cl

https://blog.avast.com/tag/false-positive/