Neither https://activatepd.parallels.com nor activatepd@parallels.com not working

I am trying to activate my Parallels Desktop 9 license. After installing PD on my machine, I entered in my Product Key. Despite my good internet connection, I was taken to a page saying "PD cannot connect to the Internet in order to complete your product activation" and displaying an activation ID to either pasted into a webpage (http://activatepd.parallels.com) or email to activatepd@parallels.com in order to obtain a confirmation code to complete the installation process.

For the last six days, whenever I try accessing the link for the webpage I receive the error message: "Not Found | The requested URL /pdfm9/ was not found on this server. | Apache/2.2.3 (CentOS) Server at activatepd.parallels.com Port 443"

You can go to https://activatepd.parallels.com (or http://activatepd.parallels.com) and see
Apache 2 Test Page
powered by CentOS

When emailing the aforementioned address with my activation ID, I received the following reply:
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
activatepd@desktop.parallels.com
(ultimately generated from activatepd@parallels.com)
host desktop.parallels.com.cdn.cloudflare.net [199.115.111.152]
SMTP error from remote mail server after RCPT TO:<activatepd@desktop.parallels.com>:
550 5.7.1 <activatepd@desktop.parallels.com>... Relaying denied


There's no firewalls, proxy, anti-virus software etc.
Internet connection is good.

How can I activate PD9?

 

Not worked.

 

Any suggestions?

 

please try this KB