@grv97 if you are unable to access pfsense webgui, you have bigger issue then whatever your using as monitor not answering the zero payload monitoring ping.
BTW this thread is 2 years old, cmb is no longer with us and have not seen him around for long time - he is very active at his new home unifi forums.
You are more likely to get some help if you start your own thread with exact details of your problem.