I don't remember my admin logins to my surveys. I tired to access the PHPADMIN database directly to change passwords and it did allow me as password type was Blob binary.
I did a few attempts but with no luck:
1)Convert Binary to Archar - not work.
2)Added a new user under survey_user - could not login using the new user even though I duplicated all settings with admin.
3)Tried forgot password function - did not work, when the surveys were set up, I did not set up smtp from the admin page.