Cannot Connect to Internet with SIM

I’ve completed two Mayfly loggers, each with a ClariVUE 10 turbidity sensor connected. I used the DRWI_DigiLTE sketch to set the Logger ID, arrange the variable list, and input the UUIDs. Howeve

I’ve completed two Mayfly loggers, each with a ClariVUE 10 turbidity sensor connected. I used the DRWI_DigiLTE sketch to set the Logger ID, arrange the variable list, and input the UUIDs. However, I keep getting the message “could not wake modem for clock sync” on both Mayflys. The data for the sensor is shown on the serial monitor and it states it is saved to the SD card as a csv, but it isn’t transmitted to MonitorMyWatershed. The connection also appears to be -9999, which I’m assuming means there is no internet connection to the Mayfly.

My SIM cards are from Hologram and both are activated and in a “ready” state as according to the website. I’ve checked a few other forums but am unable to fix my issue. If other information is needed, I would be happy to provide.
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