The statement perhaps is poorly worded but not false. It means that the coupons can be applied to any background of your choosing. Where some may be confused is that you would need to have a sufficient amount to claim the one of your choice.
In the English language the word ...any...has a specific definition. The use In this case renders the statement false. It was correctly worded before the update. No need to make excuses for igg. I was just pointing out an issue the should correct.
The wording on the Background Coupons were written before the Fun Fair was released, and IGG's attention to detail with these kind of things, is mediocre at best.
Good catch, it's stuff like this that give this game an unpolished look and feel. I can't imagine fixing something like this would be difficult.
It should be reworded as "Exchange for any applicable Backgrounds at the Background Page."
Course, the description for Talents/Crests is still a grammar mess that confuses just about every single English speaker in the known world. I don't imagine this getting fixed anytime soon.
That's IGG's oversight and failure to change the wording after fun fair was released -- it requires its own unique coupon. It's the same poor wording in the past events such as "X% chance to get X hero which they have removed."
I have now learned to double check all the details before pulling the trigger and take those given odds with a grain of salt. However, please be advice that although all events and purchases have the fine print "IGG reserves the right to the final interpretation of this event", this does not apply to unclear and ambiguous language. The purchase is a contract, and in the united states contract law, if you can show that the language in the contract can be subject to multiple interpretation, it is the court that has the final say.
Just an FYI and don't meant to start anything. It is in your best interest IGG to make sure you get those right and protect yourself from disputes.