It works fine now.
It had to be on the internal SD card. Unfortunately I don't have Wi-Fi at home and it is freezing outside (after a few super hot days!) so I didn't feel like going to a Wi-Fi hotspot today. It doesn't seem to pick up GPS from my balcony, but this was predictable (we discussed this when I wanted to buy the Celestron portable planetarium). I will try outside as soon as I can. There is no compass or gyro symbol because it won't pick it up from inside. GPS is enabled in the settings.
It picked up a weak signal with Sygic, but nothing with SS. I have the maps for Australia and NZ.