Hi, @skullyblue. 👋
You won't be able to apply a Thumbs Up to an individual artist. However, you should be able to use your 👍👎 for songs when listening from a station.
Looks like you've enabled a few complimentary sessions of Premium Access.
Does this happen when you're in the free session of Premium?
In the meantime, could you send over a screenshot of what you're experiencing?
Let me know. 🎧