I was having the same issue and found that if you go to the song or playlists and tap the 3 dots in the right hand corner there is a repeat button! It seemed to work for me. I don’t like where it is though, was extremely hard to find and overall inconvenient.
You’re absolutely right. There was an app update 3 days ago. I spoke to customer service, and they told me that the repeat options are still available, but have changed to the upper right “...” corner of the tracks.
My repeat button recently disappeared as well. By clicking the three dots in a line, you will find the list that says queue and add to playlist, etc. At the top underneath the album cover there’s the repeat button as well as shuffle and go to queue