UR28M Did not work !

Hi ! I use Makbook Pro, Catalina OS, Cubase 10.5.5 and today when i I turned ON the button of my UR28M, indicators flashed several times with full light and the sound card did not work anymore. Yesterday everything was just fine, today i was surprised. I have another laptop with Windows and the UR28M works without any problems at all, but with Macbook Pro, not anymore. The laptop see my sound card and when i switch from Internal speakers to UR28M, there is no sound. In Cubase 10.5.5 i chose the sound card for my audio devise and no sound. When I chose UR28M for audio, my macbook refuses to play audio, and DAW freeze, youtube video too, my audio player too. Any ideas ? Thank you !