I have tried yesterday and today to do the 90 day reporting online and have not got passed the first page, I have done 90 day report online with old passport when it was valid before. I have been to immigration before with new passport and also done a 90 day report in person with the new passport, which would mean it is in the system ok. Can anyone advise what the problem/solution could be, thanks.
TLDR : Answer Summary
The user is experiencing difficulties completing their 90-day reporting online after switching to a new passport, despite having successfully reported in the past. Comments suggest that online reporting with a new passport is only possible after exiting the country and re-entering to receive a new arrival date and TM6 card number. Users also note that reporting must occur within the 15 to 7 days window before the due date.