Troubleshooting credit card charges not occurring
After applying the 7.9.0 update and placing an order, client credit cards may not be charged.
This occurs when the Setup > Automation Settings > Retry Every Week For setting is greater than 0
Change the Setup > Automation Settings > Retry Every Week For setting to 0
Or tick the Attempt Only Once option on the same page
Please apply the 7.9.1 Maintenance Release via the Utilities > Update WHMCS page.
A hotfix has been created for 7.9.0 only which will resolve the cause of this error: