If you’re using Smart Bro, chances are you’re also blocked from accessing Paypal.com. Don’t worry, you are not alone. My Smart mobile wifi is blocked as well. Paypal seems to blocked a wide range of Smart IPs. I suggest that you use another ISP or a VPN, when accessing Paypal.
This happened since March 2015. A lot of Smart IP addresses were blocked from PayPal. And lately, last December 2016, more Smart Broadband IPs were blocked by PayPal. It’s safe to assume that it’s an automated block.