I'm being running some scenarios and I think , at least for me, that call forwarding issues are because of WiFi connection. I'm not saying that it won't connect by WiFi, but I tested turning off my WiFi and within the minute like remote says it connects and call forwarding is activated with absolutely no issues. This has happened twice flawlessly. I haven't retested with WiFi back on, but I can say though that when I did have it on, and just failed to connect and would loop could not connect to call forwarding and never remotely connected to my phone.
It still hard to tell if it's the Gear Manager app or AT&T. I speculation is that since AT&T has two number tied together that it needs the 3g data to connect properly to the Gear S. I think that when the WiFi is turn out it's not allowing the 4g data information to be sent to the phone properly and having a harder time to remote connect or call forwarding. I'm wondering if it works better on WiFi they both are on the same WiFi connection but out of distance.
It still hard to tell if it's the Gear Manager app or AT&T. I speculation is that since AT&T has two number tied together that it needs the 3g data to connect properly to the Gear S. I think that when the WiFi is turn out it's not allowing the 4g data information to be sent to the phone properly and having a harder time to remote connect or call forwarding. I'm wondering if it works better on WiFi they both are on the same WiFi connection but out of distance.