TalkTalk Webmail - unable to access

I have been unable to access my TalkTalk (Tiscali) webmail for 2 days.
I get no error messages when trying to access TalkTalk, it will just not load. The blue circle on the tab just keeps going round and round and then I get 'Internet Explorer cannot display webpage' error.

This is the only way I know to access emails and some are now urgent.
Any help would be very much appreciated.