Credit card declined because in test mode?

[Mangosteen]

“Your card was declined. Your request was in test mode, but used a non test card.”

Never happened before. Do I need to change some settings somewhere?

[PastTense]

I think it was the website you were using which was in test mode:

What Is Test Mode and How Do I Turn It off and On?

Answer

For security reasons, all new Authorize.Net accounts are in Test Mode. When an account is in Test Mode, transactions may be submitted that will not be authorized or charged to the account numbers provided in the transactions. When your account is in Test Mode, each page in the Merchant Interface will display an orange banner stating:

Your account is in TEST MODE - To update click here

Email receipts generated by Authorize.Net will also indicate whether they were submitted in Test Mode, by having this text at the top of the receipt:

************* TEST MODE *************

Placing the account in Test Mode can allow you or your developer to test your website/software implementation without submitting live transactions. While in Test Mode, transactions will not be saved to the database or be viewable in search results or reports.

https://support.authorize.net/s/article/What-Is-Test-Mode-and-How-Do-I-Turn-It-off-and-On

[Mangosteen]

Ok, its them not me. Thanks.