der:hans, if you have not completely tired of experimenting with what should already be easy to use, try approaching the problem backwards. In this case assume that somehow their software has already found a password for you and this is all just a poor way to report the problem. If the screen you are getting stuck on allows it, request a link to get your old password or a link to create a new one. This might clear out any garbage associated with you account, especially stuff that may be hard to see.  Just a guess, but it sounds like you have thoroughly  tested all angles of you current approach.

Misha

[resume cloak]