Registration for the 6-9 March 2017 Hammer course

Hi, 

I am trying to register for the Hammer transient analysis course 6-9 march 2017. But when I click "register", the system asks me to confirm adress and some details, then it logs out automatically. When I log in again and try to register again, it repeats everything. 

Could you please help me to register for the course.

Thanks in advance

Kind regards

Anna