Mac OSX 10.12.4 (latest) PM5 Build 18359 (latest) on a MacBook Pro (Retina, 15-inch, Mid 2015), 16GB memory.
I cannot get a connection to be made to Zenfolio with PM5 so I can directly upload to my client galleries. The screen shot is attached too. It NEVER makes a connection, where I can connect with LR5, and also with either FireFox or Chrome with no issues.
Am I missing something here? I checked and my password is correct, my URL is correct.