Authorize.net was working fine today and orders were being placed, then my customers started getting a blank page on checkout.
I am also getting the following errors when trying to check out:
Error: Couldn't resolve host 'secure.authorize.net'
Error: Failure in Processing the Payment (ps_authorize)
I have verified that the API Login ID and Transaction Key are correct and even changed the Transaction Key, but still get the same errors.
I have not made any changes to the root, so not sure what the problem is. I also got a popup once that asked if I wanted to download: index.php during checkout. Can anyone advise a fix?
Thanks,