I don't know where to get a redeem code or what that is about
If memory serves me correctly, the "redeem code" is used for "special" tournaments... more often than not created by WGT.
Maybe Nico, if he is reading this, can create one. Hint hint
The Redeem Code and Tournament Code pages are two different things.
The Redeem Code entry page (found on the Daily Bonus page Menu) is basically for Promo Codes. I haven't seen many if any from WGT in the nearly 4 years I've been playing. I would think it would be used for giving away prizes or items such as Balls, Equipment or Apparel by giving out a code to enter to receive the item. Right now any of those are basically redeemed automatically through your inbox but maybe that will eventually change.
One thing it might begin to be used for is the New WGT Gift cards. This may be how you redeem them and receive the credits(???)
The Tournament Code entry page (found under My Tournaments in the WGT Tournament page Menu) is for entering codes for Special Tournaments created by WGT.