PROBLEM: The links in the table of contents are greyed out/not clickable.
It is a glitch that has to do with cookies, usually on Apple devices.
Why this happens? It could happen if you visit a page INSIDE THE COURSE, while being logged out.
In most cases fully refreshing the page helps immediately (for Chrome it is CTRL+F5 or COMMAND+F5)
For Firefox – Ctrl (or Command on Mac) + Shift + R
On mobile this refresh can be done by swiping down.
Additionally, please also fully log out and then log back in, if simply refreshing doesn’t help immediately.
If not, please clear your browser cache/cookies for the website.
For chrome you can follow these two guides
Go to Safari > Empty Cache, or hit ⌘ Command+⌥ Option+E. To refresh, click the refresh button on the addressbar or press ⌘ Command+R.