Can't access Private Mode. Can I retrieve the files?

[AC Question]

I have a Samsung Galaxy Alpha. I cannot access Private Mode - at the same time as the fingerprint scanner developing a fault ("an error has occurred with the fingerprint scanner..."). I think these are related. When I turn on Private Mode, nothing happens and the phone freezes (pressing back unfreezes it but no Private Mode).

- Any help with accessing Private Mode in these circumstances?
- Can I access the files in Private Mode either via USB or My Files?

Any help gratefully received.