I am also aware that to go through Panama canal you have to pay a hefty fee, so one would not do it unless he has cargo to carry. (well, at least in normal times, but we are not living in normal times, so who knows)
I would think it's obvious that a PANAMAX vessel form PANAMA could not go through the PANAMA canal. I guess that you need to help out the less fortunate with a name like Jesus... 0:)