Thanks. That fixed the access-to-the-modem problem. I didn’t look there because I assumed that “PepVPN” would only contain settings relevant to a VPN, and I wasn’t trying to set up a VPN.
Unfortunately, the lack of internet problem remains for the modem, even though I can access it now. Specifically, if I disable and re-enable the modem after using my cable WAN, then it only works sporadically. it will have access for a minute (slow access), then lose access for few minutes, etc. The only way to get reliable access is to reboot the Pepwave - rebooting the modem doesn’t fix it. So it sounds like a Pepwave modem support problem, right?
The Aircard 754S (Elevate 4G Hotspot) is listed as a supported modem, so I should be able to request remote assistance with this, though I’m not sure how that would work since when the problem happens, I don’t have internet access.