You are ABSOLUTELY CORRECT!

My capital "M" has been changed to "m", even though I was careful to type it with a capital M.

Tell you what else I notice - on the numerous times I tried to log into Cartographer's Guild from Panjo, my password asterixes (asterixii?... asteri?...) were obscured by the prompt, and seemed to disappear before I finished typing them. Its like the password was being deleted as I typed it. I tried pasting it from a text file, but that didn't work either.