I charged my model s with a clipper creek 25amp charger using the j1772 adapter. When I go to unplug in the AM, I can't figure any easy way to do so as it's locked. The screen says charging complete and yet the unlock button isn't showing. The port js solid green. The only way I can figure out how to unlock the charging port is to set it to charge, cancel it and then the unlock shows on the screen. Then I have to reset the charging back to original setting. Surely another process exists?