I wanted to do a file backup on mobile Electrum but I was unable to. This is the error:


First question
What is causing the error?

I thought I have made an Electrum backup before, but I am not able to remember if true or not, but I think so. The reason I want to experiment the backup is the Electrum pin, not the password. I know already that you need the existing password to use an encrypted file backup as the file is encrypted with the Electrum wallet password, which means if you want to recover a wallet from encrypted file backup, you need the password.

Second question
But what about the pin, if you have recovered you Electrum wallet, will the pin still be effective? Or the wallet won't no longer require pin if you want to check your seed phrase, private key and if you want to make transaction?

Third question
How can it be possible to successfully use file backup on mobile Electrum to recover your wallet on mobile phone? I remember I wanted to try it in the past, but I was unable to.