It seems once a month, Substance Designer informs me that my license has expired, and prompts me to update it. I choose to update it via the third option, to use allegorithmic.com. It then pops up a login dialog, which has prefilled my email and password. But if I click OK, it will tell me there was a problem.
It seems this dialog just has the wrong password stored. If I manually enter my password, it works fine. So I was wondering how to get this dialog to fill the correct password, or clear what it has stored? Where is the password being saved?