OK – I’ve cleaned up my library problems as suggested. I’ve paired down the logging_to_EnviroDIY.ino to the bare minimum to check out the modem. I also turned on some debugging and I think I fixed a bug in the code that made it think it was connecting to a WiFi network. I know I got on the cellular network because it showed as active on Hologram.io but would not connect. I suspect I have a SIM card problem now. I’ll be contacting Hologram for help and a new SIM card (this one was borrowed from another modem I have). Thanks for all your help.