Lost Invoice of my EduMIP...

I ordered on May 05 2018 the kit from Germany and it have not arrived until today.
Order number: RR1343
Order Date: 5/5/2018
No answer from Renaissance Robotics. A research through USPS have not delivered any Answer.
What to do? Did I lost my money?
How can I contact the responsible of the Web shop?
Best Regards,