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April 2, 2025: de Souza Institute Systems Maintenance

On April 2, 2025 we will be performing scheduled maintenance that will impact the de Souza Institute web sites and systems, including the eLearning Centre and My Account. Please expect our sites and all courses to be unavailable starting on April 2 at 21:00 (9 PM) Eastern time and ending on April 2 at 23:00 (11 PM) Eastern time.
Please make sure to log out from the eLearning Centre before maintenance starts so that you do not lose any work.

Why does paying with a credit card not work - Knowledgebase / Cancer Chat - de Souza Institute Help Center

Why does paying with a credit card not work

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Why does paying with a credit card not work?

Some of the common issues that may cause problems when paying with credit card are listed below:

1 . Double check that you have entered the correct card number, expiration date and credit card verification code (CCV, the 3 numbers on the back or front of the card) correctly in the form. Any error will cause your credit card to be refused.

2 . Make sure your card has not expired and has enough credit limit left on it for the amount you are attempting to charge.

3 . If you have successfully paid for a course and are having issues paying for a second course that costs the same amount, on the same day, using the same credit card, you may be running into an anti-fraud system, duplicate transaction protection. Please contact us in this case


4 .
Check with your credit card company to see if they have put restrictions on your card for security reasons. Sometimes a credit card company may restrict usage of your card if you are using it in a new way or place you have not used it before to protect you from fraud.

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