Hi,
I am receiving my registration email clicking on the link and I am unable to register. When I return to the page with the code I am unable to still complete the registration process. On the page in the resend section I enter the activation code and it just completes a circle.
Do you receive any errors? Or it just goes to the homepage or reload the page or something like that?
If you don't get any error message it looks like you have cookies disabled. Most websites rely on the cookie for login.
If you can send an email to isaac (at) simutrans (dot) com either from the email you used, or at least let me know what email, I can at least manually approve your account to see if that's the only holdup. :)