More information on the conference (registration, accomodation, details of abstract publication etc) one can find on the website https://nnov.hse.ru/bipm/topmethods/2019dec/
You can also ask other questions to firstname.lastname@example.org (Sergey Gonchenko, co-chair of organizing committee)
Entrance for registered participants:
After the registration you will be able to change your form (and a file with abstract) using your e-mail and password.
Please, do not register more than once.