In some cases, when website visitors submit information through the form you've published, there may be an error they need to be informed of.
Each error message will describe the problem within a simple box:
Because these errors are rare and need to be handled in the same manner across all accounts, they are not customizable.
Other Error Messages
All other errors point either to a fundamental issue with the functionality of your sign up form that needs to be corrected, or an issue a subscriber needs to address.
Once corrected, the errors will no longer appear - learn about the errors that may appear when a form is submitted.