Hi Anna!
Most of time, the websites of Myanmar governance bodies won't be working. *especially, when you need it the most . Kindly reference the link for the registration process; http://www.dica.gov.mm/sites/dica.gov.m … er_eng.pdf and to your question, "no there's no way you can register online because Stamp Duty and stuffs cannot be done via online".
Hope this helps.
Regards,
San