I purchased a CWPPRO licnese, how to install it?

[xguntis]

Does the license need any installation/activation? I haven't received any keys.

[cinique]

RTFM!
update cwp.

[Starburst]

Does the license need any installation/activation? I haven't received any keys.

The CWP license goes by your IP address, as such there is no license key to install.
You can login and check this at: https://support.centos-webpanel.com/clientarea.php

If it is correct, you can force the update by using: sh /scripts/update_cwp

If you are using CentOS 7, make sure this is installed also: yum install perl-DBD-MySQL