Cubase freeze and contacting support

According to Steinberg your distributor is this one:

Halilit - P. Greenspoon & Sons Ltd.
8 Retsif Haaliya Hashnya St.
68129 Tel-Aviv, Israel
tel:+97236822917 - https://www.halilit.com

Try calling them, when I did (for my country) they were very helpful.

You can analyze your crash dumps using WinDBg.
Read this post, it’s fairly simple for an experienced user.