Note: This article refers to issues with validating third-party API keys in add-ons. If you’re having trouble validating your Gravity Forms license key, please see this article.
Check Your Key
This sounds obvious, but is often overlooked. As multiple keys are often required, be sure you have the correct key in the correct field. Also, be sure you’re not using an old key that has since been changed, or that you haven’t accidentally copied and pasted invisible characters (like newlines) that may affect the validation check.
Check The Add-On Versions
Because services can change how their APIs operate from time to time, be sure to use the most recent version of the add-on. If not, you could be attempting to access an API that has since changed.
Enable Logging
If you are continuing to have issues and are certain that everything is properly configured by following the previous steps, the next step is to test with logging enabled.
Simply enable logging for all messages in the add-on, then try configuring it again. Once done, check the logs within the Forms > Settings > Logging or Forms > System Status pages for any errors, particularly those relating to the response from the external service.
If you’re not able to see an issue within the logs, include the links to the logs in your support ticket, and we will be happy to help.