I have a website powered by Ubuntu with AWS. And I use Cloudflare as my CDN.
Everything was fine until today when I opened my website in Chrome, it says:
However, when I opened the page in Safari, everything is fine, it says:
[Sorry, I can only post one image, so this is an image with correct certificate] It’s on stackoverflow here: https://i.stack.imgur.com/yipxv.png
And when I logged on my AWS and executed both:
sudo certbot renew
sudo letsencrypt renew
It says No renewals were attempted. When I checked the log file, it says no renewal failures.
Another confusing question is, why Chrome is not seeing my Cloudflare SSL?
I also can’t. It’s very hard to reproduce. I guess it was because I was turning on my VPN last time I encountered this issue. I don’t know why a VPN could affect my certificate. And I am quite sure all other websites were good then, though I only tried a few famous ones like Google, Youtube or Facebook.