I agree with @lovetee, I’m only trying to read the JSON’s not edit them…
Meanwhile the shops are live, but all functionality behind the scenes, away from the visitors eye, is down. This functionality was mainly build for SEO. So I’m being burried in Google Webmaster warnings at the moment 
As it is an internal API, it is not expected to be used externally of Spreadshirt.
Yes, it was possible for a period of time, but unfortunately we needed to block this door.
That is the only thing I can forward so far.
I´m sorry.
Can the thread then be closed or are there any open issues?