Hmm, the fact that the screen worked fine for Clive earlier makes it even more puzzling... I use Windows myself, so I'm unsure if it would be a Mac specific issue - I will ask if anyone in the Heart Fragment discord server uses Mac and is experiencing a similar problem.
In the meanwhile, here is a screenshot of the exact locations just to be sure nothing was missed.
Clive's route locations: https://gyazo.com/7da50be04ddbf9e0c41e1a3a99e6d8c2
Kay's route locations: https://gyazo.com/62aa1c7ed044b0518ef8f906d88c5bd3