I have heard of this happening for a small number of users - what device are you on, and what browser are you using when you access it via the website?
Thanks for your response, I'm using Google chrome on PC, and for the mobile app that's on an iPhone.
Your response did prompt me to try another browser, and on Firefox the issue isn't happening for me so I'll use that as a work around for now. Will stick around for replies if I can help narrow it down for anyone else too or for bug fixing, though!
That is indeed strange - I've actually heard the opposite for some people (works on Chrome, not on Firefox)!
You might also want to try this: go into the menu > settings, then select the Experimental category. Try turning OFF the CDN support, and see if that changes anything for you.