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Troubleshooting Credit Card Charges Not Occurring

Symptom

After applying the 7.9.0 update and placing an order, client credit cards may not be charged.

This occurs when Retry Every Week For is greater than 0. This setting is at Configuration > System Settings > Automation Settings in WHMCS 8 and later and at Setup > Automation Settings in WHMCS 7.10 and later.

Workaround

Change the setting to 0 or check Attempt Only Once on the same page.

Solution

Apply the 7.9.1 Maintenance Release via Utilities > Update WHMCS.

Hotfix

A hotfix has been created for 7.9.0 only which will resolve the cause of this error:

https://whmcs.community/files/file/123-core-14171-unable-to-charge-credit-cards-if-ccretryeveryweekfor-is-0/