The message "Too many request for your license", means a threshold has been crossed so subsequent requests will therefore be unfiltered i.e everything will be allowed.
This is to ensure that the correct license is supplied per the user's request.
Reason for the message:
The system keeps track of the number of unique requests, per 24 hours, if the threshold limit is crossed, it then generates the below message.
A unique request is calculated by counting a single DNS request to a domain over a period of 2 minutes.
So for example, if multiple requests for www.facebook.com comes from your user over a period of 120 seconds, it will count as 1 towards the overall license limit.
To avoid this, please make sure that the license you request is sufficient enough for the environment you are setting up P8DNS in.