Authorize.Net Error - The merchant login ID or password is invalid or the account is inactive.

Hi, 

People trying to use our forms are getting an error message when they open the links. 

The warning message - 'The merchant login ID or password is invalid or the account is inactive.' usually indicates that your specified Authorize.Net login credentials are not correct, or there is some issue with your Authorize.Net account.

Please make sure that your Authorize.Net credentials (API Login ID and Transaction Key) are correct in your form.