Here is the bottom line on BlackVue's Cloud capability....it simply does NOT work! It is only there so they can advertise that the cam has it and try to keep up with Thinkware.
Sure, some people may get parts of it to work momentarily but it will NEVER work consistently or even connect consistently. Do yourself a favor turn OFF the Cloud capability and forget the Cloud feature is even on the cam.
I have not yet tried Thinkware but one thing is for SURE.....their Cloud capability cannot be worse than the DR900S cloud service!