Sticky Player not sticking on Android

Hi, I've decided to give a try to your free theme Music Journal, which I really like, but there seems to be an issue with the Sticky Player: 1. not sticking on Android, but disappearing when scrolling 2. not appearing on other pages from the menu (only on Android) 3. restarting after opening a new page from the menu on Windows (despite being set for the whole website) Would you be so kind as to help me to solve this? Thanks a lot! Gaudelier https://www.gaudelier.sk/