I have no clue, I wish I didn't upgrade from a perfectly fine working website.

All my codes match.
My errors at google all say

We encountered an error trying to access your server at https://phryz.com/googlecheckout/responsehandler.php -- the error we got is Sending failed with HTTP response code: 401. Response body was: Failed to Get Basic Authentication Headers
Integration settings
Shopping cart post security
My company will only post digitally signed carts.

API callback URL: https://www.phryz.com/googlecheckout...nsehandler.php

Callback contents:
Notification as XML (Requires an HTTPS URL)

API Version 2.2
My .htaccess Basic Authentication Mode is False, I did create the .htaccess with the link there though
I did just set it to true, it's about the only thing I didn't try, In my previous version it worked on false.