Website origin is unreachable after installing ssl via letsencript certbox


My website is throwing an error stating origin is unreachable.
I installed ssl via letsencript certbox

Please suggest

I tried purging the cache but didn’t work

DNS settings aren’t changed. Server IP is the same as before.
The website was working ok. I just resetup the same server and re-installed ssl using certbox - as before.

Your server is probably blocking Cloudflare then.

If you are comfortable sharing your server address, you could post it here.