Spotify Not Letting Me Add a Photo To a Playlist

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Plan

Premium

Country

 Australia

Device

?

Operating System

Windows 10

My Question or Issue

Greetings,

 I have tried to upload a piciture to a playlist in spotify, and for every piciture is says that it is to small, and that it needs to be at least 300 by 300. I did this with picitures exactly 300 by 300 and even more but it still didn't work. Then I got a random piciture which worked. After a while of thinking i realised that the piciture needed to be named '100277031-352-k601335'. Picitures that didn't work before, after being renamed 100277031-352-k601335 would work. Could you help me figure this out?

Marley.