Hey me too. I have the same issue, I've been updating my Instagram app and my Spotify app but nothing works. Before this it was just fine but all of a sudden I can't find the "Share to Instagram Stories" option in my Spotify app.
My type of phone is Asus Zenfone Max M2 with Spotify version 220.127.116.112 and Instagram version 18.104.22.168.121. Please help!