Naim iOS App 5.4 Problems

Ever since I upgraded the iOS App to version 5.4, I see the following two problems:

When opening the App, it finds my ND5 XS and then says that it cannot connect because another App is already connected (or words to that effect). This doesn't happen every time I connect and is fixed by re-trying once or twice. I am the only user of the App.

When using my NAS UPnP streamer generated "most played" playlist, if I touch the three dots alongside the playlist in the App and then "play", the tracks are loaded but do not play. I have to then touch play again to start playing.

Neither of the above happened in previous versions of the Naim iOS App.