Does this happen with other devices, or are they only missing on your phone? Keep in mind that Daily Mixes can change over time, and will be appear the more you listen to music. When was the last time you saw the Daily Mixes?
There's a chance you may be logged in on another account. We suggest that you log out, and log back in with the right details. If you're on Premium, the username should be shown on your payment receipt found in your inbox.
And finally, can you try connecting to different networks and check if anything changes?
Get back with some more info and we'll have a closer look.
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They have disappeared from all devices. I have "Daily Mix 1" now and that's it. The others disappeared right about when I upgraded to the premium trial. I had listened to a few stations and had favorited some songs and blocked a few others.
I only have one Spotify avvount, so it's not a matter of which account I'm using. The mixes are missing whether I'm in Wifi or using cellular date, whether I'm using an app or the website.