Wallet electrum with tails offline

Hi guys, I have my off-line tails with electrum wallet that never go online. I use the electrum on my phone with the pubkey to keep track of my balance and to generate transactions. I am having problems with signing my transactions, my webcam it's pretty decent , and yet doesn't read the qr codes when I try to load my transaction...... I really have tried a lot before coming in here , what would be a good way to copy text to tails (being offline) , or how can I get my qr codes to work?

Thank you