I think there's a bug. As soon as I entered the college I got a text from dad and after that, there's nothing I can do
Oh yeah, this is fixed in the next update, but for now if you get this bug you can fix it by enabling the renpy console (You can google how to do this) and then part way through the text conversation with your dad, open the console with shift+O, then run the below command (Case sensitive, enter exactly as written)
messageCount = 1
After that, close the console and continue as normal, and it should let you play.