Hi LTSR-NSE
No it wasn’t an accidental stop layout it was a complete loss of the roster of linked decoders, this happened after a day of linking 4 locos to sound decoders without any issues.
additional: I’ve just discovered that an internet tv device lost its Wi-Fi contact I’ve rebooted modem and that is now back but not the train roster, I’m con concerned that I may have lost everything by reinstalling the app though.