According to multiple posts here : https://www.ddo.com/forums/showthrea...Are-Up!!!-Woot!
You can upgrade from an expansion deal to a better expansion deal (even though the first expansion deal gave you many of the features).
So, since you have no deal in your account right now, I would assume (with a 99% chance of being right) that you can use any expansion deal.
As for the in-game store, don't expect the expansions to show up before the devs introduce bundles again.