30 minutes of ad-free music.. Video doesn't show.

[Kamil7430]

Since I installed Spotify on my LG Nexus 5 with Android 8.0 Oreo, the 30 minutes of ad-free music function has not worked properly. I got the announcement about opportunity to watch short video which will allow me to listen for 30 minutes without ads. But when I clicked button "watch video" (sorry if it isn't exactly what appears in English version but I use Polish version), I got "toast" notification which said that I can watch video ads on Android 4.3 version or higher. But as I said, I have device with Android 8.0 version. Please help.