Mifi 8000 USB tethering on Peplink Balance One Core?

Has anyone gotten the Inseego MiFi 8000 to work over USB tether with the Peplink Balance One Core unit? Been trying to get it to work but it just hangs at connecting on the dashboard. I know it’s not on the list of supported modems but apparently there are others who managed to get Verizon’s variant, the Jetpack MiFi 8800L to work, which from my understanding is the exact same unit with support for different LTE bands. Any particular settings I need to set to get it to work?

And on a related note, I keep getting the following error:

Mobile Internet (id: 6)
Unsupported value: modem operator

When making any changes under the WAN connection settings popup window for the mobile internet connection, any ideas what could be causing that?