National lottery app can’t pay out my winnings

I have a balance of £106 from a winning ticket, but I can’t withdraw the money

In November last year, I unexpectedly rediscovered an unused national lottery app on my mobile phone with a balance of £2.50.

Heady with excitement, I bought a Lotto ticket and won £106. But when I tried to withdraw the money, I couldn’t, as my bank card attached to the account was no longer in use, and you can only change your card if your balance is zero.