Donate Paypal not working

Hi,

First, thank you for your nice module. It’s a blessing if you work with CSS on a site.

In WordPress, on the plugin page, when I click on donate on your module, I get a Paypal error:

Something doesn’t look right. Your payment to this merchant can’t be completed using PayPal. Choose another way to pay.

It could be a problem in all your modules.

Kind Regards,
Bokibe

The page I need help with: [log in to see the link]