That's not with Bitcoin. It's for altcoins and is unlikely you have done it as you ahve to send it to an address that isn't your own.
So no, they'd have been sent to someone else before they'd have been burnt and they wouldn't show up in your wallet anyway.
And yes, import your seed into another client.
It literally say: right now we do not show private keys in the application.but you can always use your mnemonic phrase that can be used to recover your wallet.
I did, same thing in my wife telephone, ERROR GETTING ADDRESSES INFO and 0 balance.support asked me for a screenshot