can't access paypal website
I updated my MBP (mid 2010) and iMac (2009) to Yosemite and all is working fine with one problem. I can no longer access www.paypal.com using either Safari or Firefox. The browser just hangs.
Things I've tried so far:
Cleared history, cache and all web data in settings
Restarted computers
Reset modem/router
I can access other websites OK. I can access paypal.com on my iPad (iOS8.1) using the same WiFi network that the MBP and Mac are connected to.
I'm at a loss as to what to try next. Any ideas?
MacBook Pro, OS X Yosemite (10.10)