I just found Alan's glitch message:

It translates to "and even though everything was nice and quiet, the little girl named ☐☐☐☐". For me, the "name" dispalys as four squares, so if it's diffrent for anyone else, please let me know.

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So, to sum things up:
Each one of the characters has a line encoded in Base64. While they say it, their face is glitched.

Pink says: "there was once a little girl, she was happy and lived with her beloved family".
Yari says: "she had everything she wanted and her family also loved her".
Alan says: "and even though everything was nice and quiet, the little girl named ☐☐☐☐".
Choco says: "one night". I can't seem to translate his message fully, as whenever I try, all that appears are character that aren't letters. If you'd like to try for yourself, you can find my post on the previous page. EDIT: Notearl#0000 decoded it as "one night ☐☐☐☐☐ them all :)".
I still don't know what Tayla says, though, because I haven't seen her message (technically, it is possible for her not to have a glitch message at all, though let's assume she does). If you encountered it, post in in this thread, or, if you'd prefer that, try to decode the message yourself.
EDIT: Chocodivo#0000 confirmed Tayla actually doesn't have a glitched message, but she has "something else", though what it is, I have no idea. She also said that some messages are incomplete in some translations (I play on the polish server, so that's possibly why I had trouble with Alan and Choco's messages). She said it's going to be fixed soon.