I changed my address as well. After I log into the ISP, it shows my new address at the top left of the page and the FOID (and CCL) are "Under Review" If your FOID has not expired, you can still buy a firearm / ammunition - but make sure you update your address with the DMV - Driver's license and all your registrations. No new card- yet, but when I run a private transfer it tells me I'm "APPROVED" I believe they are supposed to send you a new FOID (and CCL - if that applies) but it's probably going to take a while. If you call back, good luck getting in touch with a human being at that place!