Something I've noticed on my 2011 C-Zero. If I have my Nexus 5 phone connected to the OEM radio via Bluetooth, CaniOn keeps dropping the connection to the OBDLink LX dongle ("Allo HOUSTON"). The problem seems to go away if I completely remove the pairing of the phone and the radio from both devices. It does not help if I only choose Audio or Telephone from the radio or phone settings. Also it doesn't help if the radio is "turned off" (it actually never really is off if you have the car running).
kWsaki.com / EVs: Nissan Leaf 2012, Citroën Xsara 1997 (conv. 81V & 8" Series DC) and Kawasaki GPX750R 1987 (conv. 87V & ME1003 PMDC) / Used to have a Citroën C-Zero 2011