Sorry if I insist, but can you please tell me if you have any answer to my question in the post above your, or can help me anyhow?
As far as I remember bitsend android app was officially supported, right?
I'm afraid I can't answer your question, but I think the quickest way to get an answer to your question is to check the BitSend telegram channel. There questions about BitSend are answered quite quickly.
https://t.me/BSD_Bitsend
Thank you, I will try this way too.
Still, it would be great to be able to have some induction about how to revolver the backup posted here or somewhere else on the internet.
Telegram is responsive, but seems that nobody knows how to retrieve the private keys from the backup