The option should still be there for playlist radio. Make sure you are on the playlist screen for the playlist you want to make a radio for, then tap ... and "go to radio" should be the bottom option. Alternatively, if you have "autoplay" toggled on in settings, after listening through the whole playlist, the playlist radio will begin playing automatically. Unfortunately, I don't see an option to save a playlist radio station to your playlists.
--> you can find your radio stations in the Search tab under Radio category.
( Mine ) no. The radio stations are missing. If I go to search, and browse to Radio category, I'll only see a list of recommended radios
2) previously I can generate a radio station from my playlist, which kept listening entertaining and fresh, and if I like that I can save it and referring to that later. Right now this is also missing.
I hate to say this, but, user experience and interface is so important and if there are increasing complaints and rejection vibe increasing, maybe Spotify UX team needs to be open to revert back to the older design . Thanks.
Regarding 2), you can still generate a radio from a playlist by going to the playlist > ... in upper right hand corner > go to radio. Unfortunately, I don't see a way to save a neverending radio station generated from a playlist. You can, however, save what has been generated as a new playlist (I would recommend pulling down on the radio several times to get more generated songs that you can play). For some reason, you can save a radio station generated by a song by tapping follow after you've generated the radio station.