I am having this same exact problem trying to install Anti Theft to my Father's SPH-L720T and it makes no difference if you do a normal install or a rooted install, same result. Installations I made months ago have no problems, I can see them fine on my.avast.com but installations that I have tried to make within the past week (been trying to install to a Metro PCS phone since a week ago, and my father's Galaxy S4 since over 10 hours ago to no avail, worse yet, my father is about to travel overseas on this Monday morning and I am not able to count on Avast to help me protect his phone, Why Avast has to fail me when we need them the most -- BAD timing!! This can pretty much cost Avast my business if the issue is not resolved by latest this Sunday night as I will be force to turn to a competitor I dont wish to name here out of respect to Avast [but it stars with 'C'] and it costs only $5 for lifetime as this phone needs to have a good rooted anti theft protection that actually survives factory resets and if Avast is not going to be available to perform this task, well someone else has to be available to protect our assets)