Has anyone had any luck with managing their Oyster auto top-up
recently?

I got an email last month saying I must update my credit card details
as my card was about to expire. But I can't find the links to do this
anywhere. I can sign in to my account and view the auto topup history
but there are no links to cancel or amend this facility.

I tried in both Firefox and IE in case the links were broken in just
one browser, but no luck.

I looked on their "help" facility but that was no use, it seems to be
full of FAQs for Barclaycard customers...

Graham