Clear your cache and cookies etc or use a diff browser. It's nothing to worry about its a glitch
Thank you Very Useful reply will try and post results in 10mins.Log out, clear cache, clear cookies, flush dns, reinstall browser, restart pc, try again.
If still not working, do what Chloect said. If its not working again, try verifying your PayPal and if you can't, phone Paypal and get them to help.

