I fixed one of them!
I went back and tried that last cryptogram, but this time, I put the "i"s in first. It worked! the cryptogram accepted them! it's too late to fixx the first one, but now I know what to do if it happens again. I'm afraid that he other one, where the "check it" button wouldn't work, is a hopeless case. I went back and tried to submit it six time, and now it has timed out. Oh, well.