You can place order, and leave message that it is used for Mizar S.
Other questions please create a ticket to contact with the techinical support directly.
Create a ticket in Help & Support Column in your account, technical staff will help you
Steps:
A. Open our website: www.geeetech.com,then Log in or Register a new account
B. Click your account and select“Help&Support”
C. Create a new ticket or search the old one
D. Infill the ticket detail,including description and some pictures/video links of the issue