You’re welcome!
On the M11 Plus, you don’t need to grant DUMP permissions if you are willing to forego automatic session detection. This means that you need to manually launch Wavelet and tap what looks like a power button at the bottom center of the screen before playing anything. The interface is confusing at best but it does work without DUMP - at least on the FiiO Roon Ready DAPs.
In case you missed it, FiiO announced the M15S yesterday. Some info here: