Same, I got utterly stuck in chapter 3, can't find the 4th tape of 1984. I'm starting to wonder if the name database is bugged and that's why I can't get the full name of the safecracker. But I swear I searched for pretty much every verb and noun I heard or read by now (and several possible names), and some of the names I could decipher, and still no tape 4.
And I'm sorry, I realise there's a whole Discord but I'm already so overwhelmed by every indie developer wanting you to join their Discord. I'm already stretching myself over the channels I'm currently in.