You can follow the below steps to Deactivate your ADDA Account on ADDA Portal:
1. Go to MyADDA page >> click on "Your name"(located on the top-right corner) >> a drop-down menu appears, click on Edit Preferences.
2. In the Edit Preferences window, click on Account tab >> Scroll down the page, click on Deactivate my account.
Your user account will be deactivated for that ADDA!