There's not really much in terms of support. The only way to start a support line is to suggest there's an issue with the order which typically leaves no responsibility of fault on the app itself for when they mess up. In my experience most of the blame is pushed towards restaurants/drivers which is a tad unfair. If one has an issue with such service it feels like they just treat you like you're dumb. Additionally sketchy micro transactions so be careful and check your banks