Same. I’m using a Surface Duo 2 and I saw a 1 star review for a Z Flip with a startup crash. So I think it’s an issue with nonstandard screen ratios/resolutions.
I made a post on it in the app’s community. May want to post there so the developer knows.
Stupid dinosaurs can’t even make a rudimentary “might makes right” dictatorship. Even lions can do that.