I just did a fresh OMV 4 installation and all seemed to be working fine. However, trying to set up a Plex server in Docker was causing me trouble. I wasn't able to log in successfully to "claim" the server with my Plex account. After playing around for a few minutes, I found that I was also unable to ping plex.tv. However, I was able to ping the five or six other sites that I picked to test. According to http://status.plex.tv/, there is no outage currently. Any ideas?
I am using a static IP and my router's IP as my default gateway and DNS server.