I am not sure if this a bug or not but I have an Ascended 4* Iron Patriot that is not max level and I got the cover for Ascended Iron Patriot from the Terrific Twos Vault. When I try to apply it to my current Ascended 4*Iron Patriot, it only allows me to Recruit it. Shouldn’t I just be able to add the cover to my current one?
You didn’t get a ‘single cover’ for ascended Iron Patriot. You got another WHOLE Iron Patriot character at 270 (that 270 consists of hundreds of covers).
So now you have 2 ascended 4* Iron Patriots. As soon as you get one of them to 370 you’ll be able to ascend to 5* immediately.