Album covers disappear over time

Infinite salutations! Recently I’ve switched to Deezer and absolutely fell in love with it. Everything in here feels perfect to me but all this time I’ve had a little problem.

I use Deezer on my budget-friendly Android phone (HONOR x7c) and have this issue with album covers disappearing over time. Most of the time I listen to downloaded songs in Deezer but still stay connected to the internet but when I go offline (open app straight without connection) and go to play my favorite songs (downloaded ones), my album covers disappears and being replaced with the placeholder image.

I tried to find the solution. Some said that’s because of small smart-cache storage but I set my cache size limit up to 22 GB and there only 900 MB in use. I also tried to erase all app data and download all song again but that didn’t help. I also noticed that album pictures disappear only if I didn’t use Deezer with the internet connection for last hour of so. If I’ll listen to some music with the internet, close app and go offline, everything will be displayed correctly.

Yes, this might seem like a minor problem but honestly it upsets me sometimes (when I’m offline😔).

Thanks for your attention!