Handbags   (The sad, the bad and the ugly. Non-productive stuff here.)

Had a weird problem since you posted this. My card had passed expiry date, and they only notified me by 'Kindle'.

I get at least one email every day from Amazon.

Although I had downloaded some Kindle reading material recently, I bought a dedicated 'paperwhite' e reader specifically for cold winter nights: to have a read in bed with a hot cuppa. (Live in a unheated house) It was sheer chance that I checked the state of charge on the Kindle (lasts months) and saw Amazon had taken back my last purchase, and displayed message 'problem with your card'. I only saw this message at the last possible moment, in the time frame Amazon gives.

No indication of anything amiss with my account when I logged on from PC.

Card exp date easily updated.

I only have one account, and there seems to have been no issue with non kindle stuff.
Was quickly able to replace the download which Amazon had taken back, but the message about "something wrong with your card" is sticky: maybe I can treat it as a book, to rid my Kindle of it: that will have to wait until I have the time to mess around with it.