Constant struggle to connect...Need help

OK here goes…I got 2 lights and struggled to connect. Reset, restart phone (Note 8) and endless circles. Grabbed my daughters iPhone and it instantly connected some how. So I was good as the Note 8 showed it in the app and all was good. So I went and bought the 4 mini kit. Same thing but this time the iPhone is not picking it up. On my note I get the all the checks as being good on the set up but it never ends as it just continues to restart each phase and the light turns off like it is suppose to …help.