I got this...
Dear Gordana,
Good day!
We are still unable to open the provided video. Can you please reply to this email with the picture of the following instead?
1. Picture of the device
2. Picture of the provided S/NPlease ensure that there's a small piece of paper with a hand written case reference number (XXXXX) on the photo.
I found a picture of the front of the device, just can't find the picture of the back where the S/N is... have any tips on how to find
Cheers
Contact someone on eBay who wanna sell it and ask for a photo of the S/N. As proof.