Don't contact customer support - they are non existent on this app.
I had one redemption take about 5 days to receive. It was a bit nerve wracking. The ones after that I got right away, so I don't know why that one took so long. If it happens again, I'm going to be done with the app.
Rojo
Contact customer support, mention that your gift card is still processing and for how long, they will help you with it. I had to do this with one of mine and they took care of it. On average it's 24-48 hours on response time but it might be sooner or a little longer but they will take care of you.