This is my 2nd Blackvue camera so I'm familiar with how to use these and the app. I have a 900S that doesn't have this issue with the app. I had to use the SD card on my computer with the Blackvue computer program to change the firmware settings but it still won't let me change anything using the app which is a huge inconvenience.
Just go roll back to the previous verson , this new update is atrocious and terrible. Confusing and not user friendly.
Just use the link below if you want APK 3.40
https://drive.google.com/u/0/uc?id=1U03KuVTntnSQqqy4Uu2ZUMhQnIwdYwvn&export=download
This was emailed to me by Blackvue Support Australia. It's OK to download and install.
