My card does not work anymore

Apart from the card being expired, there are some other common scenarios for credit cards to consider.

Make sure that the card is activated, foreign transactions enabled, online payments enabled, and that there are no upper of lower limits for transactions.

Of course the card needs to have sufficient funds and/or that the credit limit has not been reached.

These settings can change from the card issuers end without you realising, so make sure to check if something might have changed.