CDN isn’t working

Hi,
I have turned on the CDN and added the CDN URL (https://cl.ly/a3ecfc)

However, CDN replacement isn’t working. Files being served from main domain (https://cl.ly/86e617)

I have sent a report too here is the details-

Report number: YOCFFDJP

Report date: 09/09/2019 10:51:03

The page I need help with: [log in to see the link]