I'm running is 6.3.0 but I have noticed this from time to time on previous OS versions. I have been working with a client remotely and they were unable to get the P2 to connect to their wifi or iPhone hotspot. We changed the credential several times to ensure that it had the correct password. In desperation we cleared all credentials and just entered the one for their home wifi and it connected without issue.
Are there any known issues with a P2 finding and connecting if there are multiple credentials stored?