Available Credits not working

I tested the latest plugin ( Version 2.3.2.4) with the

following:

1. WP 3.5.1

2. Buddypress Version 1.6.2

3. Cost Per Credit: 2.00

4. Credit per week: 1

5. Signup Credit: 2

After the user sign up, He gets the signup credit of 2. I started to post the 2 classified ads but Available Credits still shows 2.

I did post a third ads but still i am seeing 2 available credits. All the ads i set to 1 week duration.

Please help.