«The Source you provided has already been attached to a customer»

Hi,

We’re seeing this message when I try to use and existing card in a dev site. We are using a live account in test mode. I’m using the test VISA card 4111111111111111. Is this because we are using the service in test mode?

Thanks, Martin

What is your website’s URL?

I have fixed it in the 2.7.1 version of the mage2pro/stripe package.
Your website is already updated.