Too big fonts + keeps crashing

I really like the idea of having a separate fb chat client with group chat support. I’d love to use this app every day but unfortunatelly I can’t cause it just keeps crashing and closing itself randomly… sometimes it can work for serveral hours without any crash, sometimes it just keeps closing itself again and again very often. Additionally the UI is not ideal too, I personally don’t like the huge text field on the bottom and all these huge text fonts and margins between literally everything, it’s ok to have them by default but there should be an ability to change all of this.

7IIV about Astro for Facebook Messenger Free