I am running SMS GV Extension on an Iphone 4 with Verizon. I've been using the program since late May. I just discovered that texts to my GV number apparently are being forwarded to my cell number, so those count against my monthly text allowance. I had previously turned off "Text forwarding" in the settings on the official GV app that's installed on my phone, because I was getting every message twice. But apparently that needs to be on, and I need to switch something else off. I'm just not sure what. Can someone tell me how to configure the extension, the GV account and the GV app so that I am getting messages ONLY through GV? Thanks!