I think this project is abandoned, from previous discussions I can see that author has used some closed code and doesn't have permissions to opensource them. We could decompile current app and create a Open-mqtt-Dash app. But before we begin, I would like the author to explain which parts cannot be used. I don't want to steal his/hers property.
Another safer solution is to just create a completely new opensource project and implement similar features.
I'll participate and give my nickel to effort
Jarno