Hey @marcin16,
Thanks for reaching out and welcome to the Community!
We're always aiming to improve our features and so we run tests from time to time, while also trying to educate our users about the benefits of Premium services and the on-demand listening option. Currently eligible users in your country can receive 14-day trials where no sign up process is required, just confirming it inside the app when you streamed for the first time. Could it be that you've received such an in-app message on your mobile to learn more about the features of Premium? If so then this is probably the case here and you are now enjoying the ad-free, on-demand listening experience of Premium for a limited time.
You can also always check your subscription status and other important profile info from your account overview page.
Hope this clears things up. If you have any questions or need anything else, the Community is here for you.
Kiril Moderator
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