Got a notification through about a new payment, went to check it a few minutes later. Upon opening the app the transaction wasn’t there, went to statement history where the error ‘access token expired’ popped up. The only way I could proceed(other than repeating steps) was to close the app, stop it running in background then reopen app, when the transaction appeared
App version 3.26.0 #620 on iPhone XR iOS 13.3.1