It seems (after around 10 minutes) of playing continuously between 4 iPads
iPad1.Host : AUM , BM3 as IAA
iPad2.Host:AUM, BM3 as IAA
iPad3:Host BM3 connected with bluetooth (connected to iPad1)
All BM3 does not respond to IAA start/stop.
Fixed : respond to MMC perfectly
Then MMC are reversed on my midi interfaces.
Bug from AUM, corrected on next version
Then at some point sometimes Link is crashing...
I know, it sounds crazy, but it's a bug...