I have used the instructions in this page (https://docs.rapidminer.com/latest/studio/installation/index.html#from-rapidminer) to register and download Rapidminer student edition on a Mac system, succesfully last week. However, when I try the same for other friends with a similar Mac and Windows systems, they can't go past the register page. The button on the Register page does nothing, and verification email is never sent to their student accounts. Can someone please help me with this issue?