Hi there - I am so stressed out writing this message hoping someone might be able to help me. I have always saved bitcoins in Nano Ledger wallet and it has been fine. Today I opened up my wallet and was shocked to find that the balance is "0". All the transaction records were also disappeared. My hands are shaking writing this message and I hope it is some kind of technical error. I am not sure how the safest way to store bitcoins can lead to this. I have contacted the supplier in London. There is no contact number and so I emailed them waiting for their reply. Other than that, I have no where to turn to. Not sure who can help me, or point me to the right direction.  I would really appreciate your help if you could shed some lights for me. Best, Roxanne