First of all, thank you for Choosing to be a Part of ClickKosh family.
With regard to the Credentials emails, Many at times, the Email gets bounced on Top Level Domains.
Just in case if that's the issue, do the Following:
Step 1 - Go to http://app.clickkosh.com/login and try to regain your Password from the Forgot Password option as shown below.
You should be able to recover the Password.
Step 2 - Just in case you are still not able to recover your Password, then Please Open a New Support Ticket and Send us your Receipt mentioning that you have not Received your Credentials (Username and Password)
We shall help you retrieve your Password as soon as Possible.