There is a "Trouble connecting?" button inside the app. Using this will send us information about your situation. This can help us figure out what is going wrong. Please consider using this. In addition: On our MIY App page in the Play Store you can activate the "Open Beta" version. Many changes included. Maybe fixes the issue you are seeing.
Thank you for your feedback. Please get in touch with our app development team appdevelopment@beyerdynamic.de - and let them know your issue. They are happy to help. Thank you and best regards, your beyerdynamic Team