Today there was an application for Dunkin' Donuts Perks. It occurred to me that I might be able to go to their website and enroll in the program without going through the Facebook application. And it worked!
The website is: https://www.dunkindonuts.com/perks/enroll.aspx?cmpid=SEMTest_src=keyword_s=ggl_K=DunkinDonutsPerks_C=PerksSR2_G=Perks_M=broad
If you enroll, the website says they'll send you a coupon for a free medium beverage of your choice and one on your birthday. =)