Can not redirect to PayPal from my site

[vietanh]

I'm on a Commerce site, doing checkout my order, selected PayPal as payment method.

After selecting "Place Order", site is redirected to PayPal incorrectly.

This works well until yesterday, without any change in my code.

Does anyone experience this? And how to deal with it?

[DPCreations]

What do you meant that it redirected incorrectly.  Please explain what should have happened and then explain what really happened.  We can't evaluate a process from an unreadable image; actually images don't explain the intended process.