Can't go Back to Main Menu

[oamjadi]

I have an android 11 BOOX Palma eink phone. And I recently downloaded jidoujisho 2.8.10.

I was wondering how come when I enter the browser or the reader there is no way to go back to the main menu. I have to close the app from the multitasking screen on android and start over. Is this there really no way to go back to the main menu?

I want to be able to see the player, reader, and dictionary options on the bottom and switch from the Browser to ッツE Book Reader, for example.