I finally got mine activated. The steps I was given in the chat session didn't initially seem to work, but I'll share them here Justin case.
"Remove the new sim card and insert the old sim card and perform reset network settings and uninstall the Visible app and switch off the device, then remove the old sim card and turn on the device and install the Visible app after that, insert the new sim card and log-in to the app."
The phone actually turned off after I reset network settings so I had to tun it on so I could do next step and then off again. After this failed to activate the phone, I tried a hard reset a couple times. Then I removed the sim and reinserted it, reset again. I turned off roaming, turned on airplane mode for (30 seconds), powered down for a full minute rather than hard reset. When I turned it on again, the activation failure message popped up, and a minute later followed by a message that activation is complete. Phone is now working. It's a ridiculous series of steps, but since you're all as desperate as I was, you might try.
