Recently there has been a rise in issues connecting to the internet. Luckily this is an easy fix you can do yourself.
First, disconnect & reconnect from SDMF-SECURE2 from your taskbar in the bottom right hand corner. Give the internet some time to connect, as for this could take a minute or two.
If this does not work try restarting your computer. This typically solves most internet issues. Also make sure you are connected to secure 2 if you are using a school-issued laptop, or secure 3 if you are using your own personal device.