Which scratcher?
The in game cash one or the golden one for real money?
If it is the golden kind, check google/apple/amazon store settings so the in app purchase option is on, it can be disabled as a parental tool.
Also make sure your debit/creditcard is valid.
If you use giftcards and live in the US you have to add the tax. You might have enough money on the GC for the donuts/scratcher but not enough to include the additional tax.
This is not support. Be careful about posting privat info on public forums. The casenumber has no meaning here and although it isnt really sensitive information it is best to not put it on a place where the whole world can see it.
I suggest you use the email or login to origin .com and communicate with support through "my cases" section.
This Forum is provided by EA but is designed as Player helping/advising other Players. In this case there is little other players can do for you.
Contact EA support
http://help.ea.com/en/contact-us/new/ and ask for a gameadvisor. Same login as the game.
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+++ This Forum is provided by EA but it is designed as Player helping/advising other Players - meaning we are not employed by EA +++
D'oh! - Em