Sorry to hear you are having problems with the ARC app when using Andriod 7.0.
To date, I have only tried Apple iOS. In my case I have had 100% success with all variants of iphone and ipad that I had tried using the ARC APP. Well... except for cases were I have tried to use the pacer car function which has been a bit of a disappointment.. but the rest of the ARC app functionality has been truely amazing!
I am very interested in trying the Android app, too, and wonder what device you are using with Android 7.0 which is giving the problems?
Thanks for the reply.
The mobile phone was my sons a Huawei model. I have a Highsense U972
which runs Android 5., also did not work. The old Samsung Galaxy Trend Neo works 100%. Used it a lot over the weekend and only stopped once when
ARC picked up a short on the track. I even manage to get my wife to race me
I used to race 1/24 scale club racing. Impressed with the ARC Air system
The Pace Car works well with Android and great feature.