Could you attach a screenshot of your current Advanced Settings for the PayPal Express configuration?
On the Admin menu, select System > Configuration
In the Configuration panel on the left, under Sales, select Payment Methods.
If your Magento installation has multiple websites, stores or views, set the Current Configuration Scope box in the upper-left corner to the target configuration.
If necessary, click to expand the PayPal Express Checkout section.
Then, click the Configure button.