I have my International Visa Debit Card where i using the Paypal option to buy anything online for international products and it saying several times failed and insufficient balance in account where i have full amount to buy the thing. Please activate my Paypal account where i use it for International Services.
If these things are complete, it's possible PayPal's Security System is not allowing the card you mentioned to be used. That's usually a temporary condition and it may be helpful to log off from your PayPal account and wait 24-48 hours before making another attempt to complete a purchase. In the mean time, it's also often helpful to log off from everything on your computer, delete the cookies and temporary internet files and re-start your system.
I hope this is helpful. Thanks for being a part of the PayPal Community!