Change Login and password issues

i changed login and password so a colleague can start using Echosign not realising they already had an Adobe account. Now at each login attempt we're brought to her old account instead of Echosign and the error message above keeps appearing. i need to get access to the main interface of Echosign and all previous signed documents. does anyone know what i should do? i cant get access through old logins, ive cleared all cookie and tried logging in through another browser, no luck!  Thanks