Album Art downloading is now ok. It is not working! After I updated the app to version 588, then the album art is now already fixed. I can download HD and non HD album arts of my favorite band Eraserheads with such a breeze now. Thanks Dev Team! My money is well spent.
I have a purchased Poweramp app version 2.0.10 build 586play. My phone is Samsung Galaxy S5 SM-G900F. I am experiencing the same problem. When I long press the album art to find and download album art, the app just loads (spinning loading) for 2 seconds and nothing happens. I cant seem to download the new update via Google Play cause update is not yet available. Once the update is pushed through my google play account, then I will update this post.