I registered this once time and I got an email.. they couldn't review my registration due to geographic situations, a staff told me they are trying to fix it and let me know... never happened.
There a shared information:
"Nintendo is not currently able to authorize you for Wii U development, due to reasons related to your geographic location. We are working to resolve these issues, but we currently do not have an Estimated Completion Date. If this situation changes, we will notify you via email.
We're truly sorry for the disappointment that this news may cause."