Thank you for writing into the community and sorry to hear about the trouble you're having. I know how that can be frustrating, but we can definitely try to help you out here.
Can you please clarify what is happening in the app? Does the system show up and is greyed out?
Could you also try power cycling your Bose system and your router?
Please let us know your findings when you get the chance.
Thank you again,
Mohsin - Community Support