If your company is located in Europe you need to pay VAT for your subscription. If your company has a VAT code and it’s registered with VIES, you won’t be charged for VAT.
To enter your VAT code, click on your name (bottom left) → Subscription and billing→ Upgrade account and on step 4 enter your billing information.
If you're already on a paid account, you need to click on your name (bottom left) → Subscription and billing → Update your payment details.
You can verify your code on the VIES website.