Generally, for this type of question, you'd want to send and email to support@camerabits.com
However, to Q1: with a successful deactivation, the number of activations on your account page will drop by 1 for each deactivation. You won't see a record that the deactivation happened, but the count on your page will update.
Q2: you can see your account page by logging in here:
https://store.camerabits.com/accountThat page uses different credentials than your forums.camerabits.com account, so unless you set the same password to both, that page may be asking for a different password.
Lastly, I took a look at your account and I can see that a successful deactivation on your License Key took place today.
Hope that helps!