Technical Issues with Pulsetto Device

Do you also have technical Issues with your Pulsetto device?

Mine stops after a few minutes into the session, despite being fully charged. After that, I have to switch on the device again and restart the program. The device itself is brand new.

Furthermore I have some issues with the app. Sometimes the inbuilt music is playing randomly, despite the app is completely closed. In another case, Spotify music is stopped when a Pulsetto session is finished.