My apologies if this has been asked before/misplaced.
I have a Bold 9000, with a data plan and BIS (I'm paying £5 a month for it according to my online Vodafone account!). However when I try to use apps like Facebook or Blackberry App World I get messages stating that I need a data plan.
I have tried using the "register now" feature, but to no avail.
I was able to use these apps on my previous phone (I lost my Pearl), and the contract has not changed, just the phone and sim.
You mentioned in your first post that you used to have a Pearl. PIN's are unique to each phone. So if you got a new phone(9000) then your PIN has changed.
UPDATE: I caleld Vodafone with my issue, and was put through to Tech Support. They asked me to delete my Service Books then they resent them to my phone. However this still does not seem to have solved my problem (They did ask for my PIN which I provided).