Looks like you have tried everything and have even referenced the Travel bug the right way, without giving away the secret code, using the Public "TB####" number, for that I have to congratulate you on your first TB find and handling disclosure properly!
Sounds like you've tried everything...
Entering the WHOLE code plus "JP" prefix
No switching of char's : "O" (letter Oh's) for "Ø" (number Zero)
Trying it a few times : sometimes the site spits it back at you
You could trying contacting contact@Groundspeak.com with appropriate subject and detailes to get it routed correctly? Good luck! I know it doesn't help much but you deserve a pat on the back.