Those of you who submit data feeds to the Google Merchant Center via manual FTP are out of luck, at least for the time being.
A Google Merchant Center Help thread has confirmed reports that the FTP method of uploading data feeds is currently broken.
Roger from the Google Merchant Center team said:
This was posted this morning at about 6:50am (EST).
So don’t freak out if you can’t upload your feeds, it is everyone.
Forum discussion at Google Merchant Center Help.