Uninstalled an app but its left user data somewhere on my pc

I installed an app called multilogin and tried their free trail. After the trial expired i deleted it. Few weeks later (today) i downloaded it again and i was still logged into the app. I've run ccleaner, looked through %appdata% but i can't seem to find where they've stored my login details. Does anyone have any idea where it could be stored or how to find it? I don't like the idea of it being on my pc after i've deleted the app.

thanks in advance

You can scan disk reg etc with this tool looking for key words

Please download SystemLook from one of the links below and save it to your Desktop.
Download Mirror #1 http://jpshortstuff.247fixes.com/SystemLook.exe
Download Mirror #2 http://images.malwareremoval.com/jps...SystemLook.exe

Double-click SystemLook.exe to run it.
Copy the content of the following codebox into the main textfield:

Code:

:filefind
Baidu

:folderfind
Baidu

:regfind
Baidu

Click the Look button to start the scan.
When finished, a notepad window will open with the results of the scan.