I don’t have an Android device either, but two users have told us that doesn’t work on their phones. So I have been testing on https://www.browserstack.com , it allows you test on all Android devices.
It seems as if the menu doesn’t open on any of them, including Samsung, Google, and LG phones. I have tried testing on a couple of the newest phone versions, with up to date versions of Chrome and Firefox browsers.
It seems to work fine on iOS devices, so I am kind of stumped.