I purchased this product for a few week, firstly I used with iOS 10.3.3. Few days later, Apple release iOS11, then I upgrade.
I have the same problem after upgrading to iOS11. Even now, I upgraded to iOS11.0.1, still doesn’t work. I check firmware, it is up to date. I did try uninstall & reinstall, do power-cycle (turn-off and turn-on), close the app by swiping up. Still doesn’t work.
the link to downgrade iOS to 10.3.3 is not available now.
I have contact tech support, they said just wait for Apple to release the fix, which has no confirmed date yet. In fact, Apple just release iOS11.0.1. It may take quite long time to have a new release of iOS.
Can Sandisk Developer fix it by Firmware, or iOS app rather than waiting for apple, which is out of your control.
I want to have a refund if not possible.