Contacting Sales is impossible

[Tris]

I think you guys really need to fix your sales email

Whenever I try and contact sales I get the following emaill

Your email to our support system could not be accepted because it was not recognized as coming from an email address belonging to one of our customers. If you need assistance, please email from the address you registered with us that you use to login to our client area.

LiteSpeed Technologies Inc
http://www.litespeedtech.com/

I am trying to get a quote so how am I meant to have access to the client area?