Server not sending registration info

Ok so i have several different e-mails i also have several cpus running as well.
I mention this because the way i test the many features of a software is install it on several differnt machines but when i register under a new email it it never send me the registration info.oh i also use the same name info cause im not trying to lie about who i am useing there service. but i wonder could this be the issue? do i need to put in some nick name or somin? any help would be nice & thank you!

oh and it also when i try to sign in it say this account has not been activated! whih means it went thru it just has not sent me a e-mail so i can activate the accounts