It's not invalid. I was just able to get Spore, Karkand, and somehow another 4 from my saved shopping cart in Chrome from last night. It wouldn't apply the coupon to multiple games earlier today but it took my shopping cart from last night lol
I'm really not interested in anything else but I was able to get Back to Karkand for free...Huh. I added Spore and Karkand, it would apply the coupon to the cheapest one, Karkand, so I removed Spore and it saved Karkand as $0.00. Doesn't seem like this will work for Close Quarters and Armored Kill. I tried to get Spore Creepy & Cute Parts Pack but it said "Payment Authorization Failed" in the same Chrome instance I got the 4 from last night on, so maybe that was it? Anyway, I don't really care!
I'm honestly dumbfounded by this all, but thank you EA.