You can check the Mollie for Salesforce release notes to see whether your issue is a known one.
All Mollie-specific debug and informational messages, as well as warnings and errors, are logged in the "mollie" custom log↗. You can change the log file's name in the Log category field in Salesforce Business Manager under Merchant Tools > Mollie > Mollie General Settings.
To get the custom Mollie and Salesforce Commerce Cloud log file(s), follow the Salesforce Business Manager access log files procedure↗.
The information provided in the logs should help you to understand which troubleshooting steps to take. You can also share them with our support team when you contact support for further assistance.
You can view the details of payments made with bank transfers and vouchers in the Salesforce Commerce Cloud Salesforce Business Manager.
Bank transfers: You can find additional detail in the mollieProductCategory attribute under Merchant Tools > Ordering > Orders > [select order] > Payment tab.
Vouchers: You can find additional detail in the mollieProductCategory attribute under Merchant Tools > Products and Catalogs > Products > [select product] > Mollie product category.
If the statuses don't match, try the troubleshooting options listed in Payments aren't processing properly.
The Mollie plugin stores webhook notifications in a dedicated web service log file↗ so that you can check whether they work properly.
Mollie for Salesforce includes a job for recovering from update failures.
The test and live API keys that you have assigned to the API key test and API key live fields in Salesforce Business Manager under Merchant Tools > Mollie > Mollie General settings should be the same as those you see in your Mollie account under Developers > API keys.
If the API keys are incorrect, you can try to restore the connection.
Refer to the Mollie for Salesforce release notes↗ to check if your issue has been resolved in a newer plugin version.