Problem select tracks and problem with APP

Hello everyone,
I encountered an annoying problem after the last update of my ROSE RS 250 … if I select from the touch of the Rose a random track present inside a folder of my SSD or HD I have no problem but if I select the same track from the my iphone app plays an absolutely random track.

Today I updated the app to its latest version released just today hoping that the problems had been solved but unfortunately in addition to not having been solved now the app disconnects from the ROSE every 5 seconds … :frowning: