I don't have a good answer but it looks like for some reason the check-in with your first control center (Oakland) may never have completed properly. I can see where you were handed off, and the frequency was changed and the log has a hotkey 0 entry for check in, but after that Oakland Center should have acknowledged your check-in and that did not happen. You got traffic advisories, but if the check-in did not complete properly for some reason, it would explain the lack of further Center handoffs. I would probably just try to repeat the flight and make sure Center acknowledges the check-in and hopefully the flight will proceed normally.
I think I know what might have happened. I was flying with MCE. So, I noticed that when the FO changing frequencies, the frequencies available for the COM in the PF3_Display program appear only after a few seconds but the FO contacts the Center often before these same frequencies appear. Sometimes I have the reflex to ask the FO to contact the Center again in order to have the expected answer "Roger Callsign"...
Now if that is indeed the problem, maybe MCE's FO could wait until the frequencies are displayed before contacting the center operator.
"and the frequency was changed and the log has a hotkey 0 entry for check in
But what I don't understand is why PF3 doesn't take into account for example in a buffer the key that is sent by MCE (in this case the hotkey "0"). Timing issue ?