This is was a error that was fixed in the last update, the number will fix itself out before payment date
As you can see your other ad zone is working just fine

Welcome to AdsBit bitcoin advertising network
https://adsbit.net

We offer banners and popups

Advertisers
Promote your business using our Pay Per Click (PPC) or CPM ads and generate top quality leads to your websites. Your ads will have widespread reach, create your ads in Banner formats and Popups/Popunders and also control the target audience of your ads by configuring geographical filters.

Publishers
Start earning money today with your website, simply generate a code and place it on your website and start watching your earnings go up. We pay twice a month if your account balance is $5 or over.

Advanced Targeting
- Reach users in selected countries, hours, days, period, operating system etc.
  
Detailed Statistics
- Every user receives our advanced statistic and detailed traffic reports.

Fair Value
- Both advertisers and publishers receive the best value. It's our promise.

Current deposit bonuses for advertisers
Smallest Package: Price $1.00 Bonus 2% added to your deposit
Small Package: Price $3.00 Bonus 3% added to your deposit
Medium Package: Price $5.00 Bonus 4% added to your deposit.
Large Package: Price $10.00 Bonus 5% added to your deposit.
Extra Large Package: Price $15.00 Bonus 7% added to your deposit.

All payments in $ will automatically be converted to BTC before you pay, we use Coinbase (USD) for our rate.

FAQ
What is minimum payment amount?  $5 and we pay using bitcoins.
How often are payments made? As long as your account reaches the minimum payout of $5 you will get paid twice a month, on the 1st and 15th. Payments are done automatically you do not have to do anything once your account balance reaches $5.
Does my site have to have a minimum Alexa rank? No minimum Alexa rank is required but we do require a clean looking website and not 100 ads all over it.
How often are popups/popunders shown? They are shown once per hour.
How long before my website/ad is approved? We approve all websites and ads within 24 hours.