Has anyone used an e*WON Cosy with AT&T? I have a sim card and a data plan but for the life of me cannot get it to successfully connect to the cellular network. I have tried many APN's and even had e*WON support remote in and help with the setup. They told me to contact AT&T, and before I go down that LONG road, I figured I'd just reach out and see if anyone has any success with this.