Sorted now - went back to the Albion app to upload it for it to tell me it's already in my wallet and then clicked 'remove from wallet'. Found the original email with link on it from 2021 when they switched to all this which I've luckily still got and clicked on the link to upload it to wallet...
Mine has vanished too, Android also. I then went on the Albion App to ticketing and tried to add my ST back to my wallet and it says it's already there when it isn't.