When my Windows 10 display settings are scaled to 150% (the recommended setting), Enpass does not fit on my screen and the window can not be resized.
This thread gave me the idea to disable the scaling for High-DPI displays in Enpass (even though display resolution is 1920*1080 on a 13" laptop). This way Enpass fits on the screen and the window can be resized, but the menu items are bunched together.