question

I quickly checked the logs on our side, but I'm not seeing any data being received for your device, with the exception of a few single "module connected" events.

My best guess would be that the only gateway within reach of your module is a so-called single channel gateway. These are sometimes build for small local setups, but do not support all the radio channels required by to function as a proper LoRaWAN gateway and thus usually do not work properly with most LoRaWAN end devices such as the VE.Direct LoRaWAN module. We've seen multiple problems in the past with setups trying to use such single-channel gateways.

The Victron module sends its join requests (requests to connect to the network) repeatedly, going through all the channels, so eventually it would come across the single channel this gateway supports and manage to connect (indicated by the light now blinking green). But since neither the network nor the module have any way of knowing that this gateway only supports a single channel, they'll attempt to continue their communication over other channels (as is required by the LoRaWAN specifications and local regulations), and the data will thus never arrive in VRM.

If this is indeed the case, I'm afraid there is little you can do about that, except setting up your own gateway which properly supports all channels. See https://www.victronenergy.com/live/vedirect_lorawan#lorawan_radio_frequencies_and_coverage for more information.