Gooten: Print on Demand

I used Gooten for POD for about 6 months...
All of a sudden multiple orders were not being pushed properly to Gooten.
I contacted customer support several times to try to fix the issue.
Following their instructions now my entire store will not connect with Gooten. I have emailed, and emailed, and emailed asking for help but their support team is slow to respond and doesn't have any explanations nor solutions. Avoid at all cost...or it might cost you business.