Unable to ping IPv4 addresses after starting PMS (remote access not working)

[pshanew]

Have a look at the guidance in this thread. If Verizon’s Home Network Protection feature is enabled, try disabling it.

Plex server not allowing computer to connect to internet

You can get server logs from the filesystem on your computer the server needs to access the internet for login and for getting metadata. Verizon has something called Home Network Protection you may need to turn off. This user had same issue.