I noticed the Longhorn egift card points-only offer this morning and decided to get it. When I first opened it, I got a screen that showed $20 at the top, but for Instant Win and 50 points at $5 value, as shown in the picture. I closed that window and retried. The second time, the offer loaded correctly - I think - and I clicked to get it. I'll check my e-mail, next, to see if it actually sent the egift card to me.
The Longhorn Points-only offer gave me the same screen yesterday also. I'm glad that I didn't automatically hit the redeem button. I closed the screen for the 50 point $5 Longhorn offer and clicked on the $20 Longhorn offer again. I was able to purchase the $20 offer without issue afterward.