Password change???

What is the world is going on here at blogger.com? I have had this account for over a year with the same log-on but all of a sudden my Robo Form program which remembers log-ons and passwords wants to apply my Google account log-on and password to this account. Why is that happening? If I try to "correct" that then I end up with a Blogger log-on and password being applied to my Google account. What are these folks up to anyway? :-(