Media players not showing up in frontend android 7.1.2 tablet

Hi, all. I’m trying to setup the wallpanel app on a android tablet v7.1.2. The frontpage opens fine in wallpanel except for the media players. There’s an empty space where these are supposed to be ?? How can I fix this ?
The media players work and show on all my other devices except the android tablet. This is my first android device so I’m new to this…
thx a lot!!