Wallet loses card info after ios update
Like many others, I woke to find a message from iCloud saying it had tried to process an automatic payment but couldn't, so my account would be downgraded unless I resolved the problem. Well, the problem was that the ios update had wiped out the credit card payment info in Wallet. The short-term solution is to reauthorize the existing card in Wallet with the three-digit security code, which I did. The long-term solution is for Apple developers to test the freaking updates before releasing them and not waste everybody's time.
iPhone SE