Unable to add to existing, or create new playlists with the recent app update

Spent over an hour waiting on line to talk to customer service rep who was not helpful. He finally came back and said the recent I couldn’t add a playlist or put music onto existing playlists was because, “Sonos is improving its service to accommodate new products.” He also said additional updates will be released to facilitate what I’m trying to do. Huh?!! When does an update eliminate basic features of a product and only roll them back out when the bugs are worked out. Thankfully, I didn’t update the app on my wife’s phone so can still use this function. Truly unbelievable!