How to link Heroku to Godaddy domain ?

I have followed all the stack overflow answers I found on the topic but none of them fixed my issue.

I have a Heroku app "lagora.herokuapp.com" which is running and I'm trying to connect it to www.logora.fr through Godaddy. On the heroku interface, I've added the domain with the CLI heroku domains:add www.logora.fr.

heroku page

On the Godaddy interface, I've changed the CNAME (www to herokuapp) to redirect it from GoDaddy to Heroku. GoDaddy page

This setup displays nothing. I've been struggling and waiting for hours now. Do you have any ideas what's happening ?

Solution

What I would suggest since Godaddy is not the best to manage your DNS is to get a Cloudflare account and change your nameservers in Godaddy (below the rules) to point to Cloudflare so that it handles your DNS. Here is a link.