I've had this problem for years, but it's worse in the past few months.

It's nearly impossible to get a browser to connect to webmail. Sometimes webmail.shaw.ca won't even connect, more often the login screen appears with an 'unable to communicate with login server' warning. In the last few months I've been unable to connect with webmail for day long periods. 

Sometimes can get around this by reloading the page, making multiple attempts, closing and opening the browser. Other times it just keeps returning the unable to communicate.

Same story with 3 different browsers (Chrome, Edge, Firefox), 3 different computers using 2 different firewalls.

Wired/WiFi  connection. Everything else works fine. Can get email through a dedicated program no problem.

At the point of just giving up on the web interface all together as it is unreliable.