I did my first shop for them today and am having trouble with their receipt upload system. When I go to upload the receipt, it just says "Please wait. Your file is uploading.." This stays on the screen -- I've waited and waited but it won't upload. Anyone ever have this problem with them? I know the file isn't too large -- it's actually pretty small. Anyways, I sent an email to them with the receipt attached. Haven't heard back yet and I'm hoping this won't be an issue.