You can configure the wireless for the device through the enabler configuration tool.
Just go into Avalanche Enabler Settings > Wireless. From here you can set your SSID, Encryption type and any keys.
If you are still having trouble connecting to the wireless, try manually configuring the wireless profile on the device (through the device's wireless config utility instead of Avalanche). If it works from there, open a ticket with us at https://support.wavelink.com/wavelink/Home/
Or, if it still has trouble connecting after using the wireless config utility on the device, contact the manufacturer for further assistance.