You need to contact customer services to resolve any limitation OR account specific issues. Click help / contact bottom left of Paypal pages for options available for your country.
If you use the phone option then as you can't log in use the guest buyer option to log in.
Or have you considered contacting Customer Service via Facebook or Twitter? You can send them a personal message from their facebook or twitter pages. It's: https://www.facebook.com/PayPal and @AskPayPal for Twitter.
Advice is VOLUNTARILY given. Please leave Kudos / Solution if I have helped you.