Thanks Ronasara, I do know my Mac login password (I use this every other day due to work security - my touch id requires the password every 48 hours) and my Finder username - however Finder is rejecting either one or both. The .dmg file is asking to be dropped into the App folder - I have dropped to my desktop and tried to open but it will not open unless it is in the App folder (it is a proxifier app to allow jumphost sessions). Looking at the link it is asking me to reset my login password - do you know if the Finder password and the login password is the same thing - because if it is and I already know it surely it should work??? I feel like I am now stuck in a loop of silliness.