I see this is kind of old, but this was me a couple months ago. Also live near Chicago, trying to exchange expired tickets. I had 2 -5 day hoppers purchased thru Citibank with points. The 3rd ticket I had purchased thru UCT. Citibank said can't help, call Disney. First CM said Citibank had to contact them to reissue tix since they were effectively my
travel agent. UCT said they had nothing to do with it, call Disney. 2nd CM said it could only be done in person at DLR ticket booth.
Long story short, I eventually found a CM who said I needed to purchase a new ticket, then send proof/copy of original ticket from UCT and Disney would issue a refund check or gift card.
Citibank was more complicated but eventually found someone in customer service to call DLR, get the original tix numbers (which disappeared from my account when they expired)) then purchase new ones and send them the old expired numbers to get refunded.
Painful process but thankfully didn't require a flight. And it did take about 10 days after I snail mailed the old ticket to get an email with a Disney GC refund but it worked.