Log in to your Songer account.

Go to the "Songs" tab.

Find the song, the artwork of which you'd like to download.

Right-click on the image.

Choose “Open image in new tab.”

In the new tab, the image will appear in higher resolution.

Right-click on that image and select “Save image as…” to download it.

Log in to your Songer account.

Tap the three lines (☰) in the top-right, then select "Songs."

Find the song, the artwork of which you'd like to download.

Long-tap on the image.

Choose the “Save image” option.

Select the download location, and it'll be downloaded.