Yes, I have tried the new portal but I have experienced a different problem. The website automatically inputs the days for one day prior to what I enter when entering Sea Time for Familiarization. Additionally when I begin to enter Sea Time for Watch-keeping that is prior to Advanced I am given an error message "Failed to Validate the dates with Advanced Course" and I am unable to proceed. According to the NI you are allowed to use a max of 30 days prior to induction for watch keeping yet the portal will not let me input it. I think this new portal is set up for the new NI scheme that took effect Jan. 1 2015 and this will cause an issue for others that still fall under old scheme.
Did you have any luck with your issue or a contact you could share to resolve mine?