Which Key/Card do I use?

I was sent a Pre loaded key/card - does it matter which one I use to top up now?

Hi @amylouisejm

Welcome to Community! :grinning:

I’m glad to hear you’ve received your preloaded key and card. Going forward please use these to top up your meter. You may see an error message if you attempt to top up with your old key/card so best to not get these confused.

All the best,