I previously reported possible issues with the option on the follow mode. I tried some more testing today and I tried at least 6 times and could not get the follow mode to even work. I finally had to change the battery so I shut everything down, even on my phone, and re-tried with a fresh battery. It worked. I noticed one thing different, when it worked I received the msg. about the altitude, when it was not working I did not get that message. It seems as though something was running in the background of the phone which was interfering with the Dronelink program. I tested program with no options and all options and worked with both. It appears that if you choose one option (the first) you have to pick them all, is this true. Also when I was operating with all options when I sticked up the AC just spun uncontrollably until the RTH button was hit.