Middle of April?
You should have received an email from us either on the 16th of April or May 1, if we received your exam record from VUE. That email would have provided your credentials for logging into cwnp.com, verifying and registering your exam results, and requesting your certification kit.
If no email arrived, please do 2 things:
1. check your spam folder. It happens.
2. email a copy of your score report to email@example.com
I hope this helps.