Tried that as well fiio link is embedded into fiio music it recognizes my phone but offers no control of m11 pro Unless I am doing something wrong or missing something else.
I searched YT for "Fiio Link" - this was the first in the list and seems to give you all the info you would need to get up and running.
Loved this option on my M11 and love it (via Hiby app) on my iBasso DX220. I can plug the DAP into my home theater amp but still have the convenience of control from my sofa (without running a long cable!). What a time to be alive!!!