Have you been trying to link it every day since and it finally worked today? Did you get an email at all before or after you were able to link it?
No. I got the first AOR email but I have been waiting for my husband to get this second AOR email I kept seeing people talk about in forums thinking I needed that email for his UCI to be able to link his OWP to the account. But I'm a ding dong and it totally blew passed me that after I finally linked the GCKey to our application you can see my husband's info on the page and the UCI was there. Then when I tried linking I was choosing the wrong category cause the OWP is under temporary residence or something. I kept choosing one that said work permit and it gave me no options to type anything. If it wasn't for this forum I would be lost man they don't walk you through much lol