Okay, this may be the dumbest question asked here in a long time; but I can't seem to figure out how to convert my HBO subscription on Verizon FiOS to HBO Max on a Roku (which just got the feature about 2 weeks ago). I Googled around and there seem to be several threads addressing this issue with no answers. Both the HBO page and the cable pages are frustratingly circular in referring you to someone else to solve the problem. My brother-in-law luckily had set up HBO Go, which basically converted automatically; but I never set that up because I never really watch premium video on a phone or tablet. I was able to add the channel icon to Roku; but there does not seem to be a way to add your cable credentials so that you don't have to pay twice. Has anyone successfully converted their existing HBO cable subscription on a device like a Roku? I've seen that even AT&T Cable customers are having issues and AT&T and HBO are part of the same corporate family.