@tom Thanks for the response. The issue has been resolved. I successfully pinged google after trying this on my home network (WPA2-Personal security type), I'm guessing the issue was with the security type of my firm's network that I had been trying to connect to originally.
As for the modem issues, after familiarizing myself more with the hardware I realized I hadn't attached the VOXL LTE modem that came with my kit which probably explains why a disabling command worked and an enabling command gave me a failure message. I had incorrectly assumed the modem of concern was already onboard the flight core. Thanks to the dev team and @Chad-Sweet for your responses.