Album Art Problem

[Willom]

I control the Media Monkey music on my Windows 10 laptop using the android version of the Media Monkey Remote (MMR) installed on my Galaxytab 4. Originally, when I attached album art to each album using my laptop Media Monkey, the album art would also show up on my on my MMR app when selecting an album track. Lately, when I attach new album art to a new album, the art doesn't show up on MMR when choosing an album track. The art is still on the laptop Media Monkey but not on MMR. Any one know how to fix this problem?
Thanks,
Bill

[Lowlander]

This is a third party app: http://www.mmremote.net/Forum/