At the moment im trying to figure out how some members cant register to this forum but i can tell you steps to joining the forum:
1: click on register at the top of the forum.
2: enter all required information for registration.
3: then click next or confirm.
4: finnish the registration information.
5: go to your email.
6: click on the registration email.
7: go to the fist link that requires you to activate your account.
8: try and log in on the forum.
9: if it works i will add you to the members section.
If you have problems you must contact me.