Bad hacky app? Duped?

I had to use an app called QubeWire to upload my films to a film festival.

Films are under 25 GB. However since it was taking too long, I checked Glasswire for uploaded data and it turns out over 140GB of data has gone out of my system. All through Qubewire.

It uses UDP, (whatever that means) but how come so much more data had to leave my system!!!

Please shed some light on it.