This is probably your issue joining, and how to fix it
https://support.discord.com/hc/en-us/articles/1500005292701-Accessing-an-Age-Restricted-Server-FAQ#:~:text=Sign%20in%20to%20Discord%20on,iOS%E2%80%9D%20and%20click%20the%20toggle.
But as I said if you're missing the "textfiles" bundle it means your 4th installer isn't downloaded and/or installed correctly