Error Message: Invalid Credentials

Response Code 942: Invalid Profile ID, or source URL

This means that likely the link you are using to purchase online doesn't match the link in the Moneris Gateway.

The most common cause for this is if you go to https://tee-on.com and not https://www.tee-on.com 

Not having the www at the beginning of the URL will cause this message to pop up. You will need to make sure you reload the page with the www's by clicking on the url search bar and typing them in. 

If this code is popping up for anyone trying to purchase from your online store then you will need to redo your page link.