SSL error subscribing to university timetable

Hi,

I can’t seem to subscribe to my uni timetable on my calendar. They gave us a link, told us to add the account in settings -> calendar -> accounts, however when I try this, it flashes up with ‘cannot connect using ssl’

then when I click ‘continue’ it flashes up with ‘cannot verify account’. Then even when I save, the calendar events do not come up in my calendar app.

help please!