Subdomains on Cloudflare and Heroku

Website, Application, Performance Registrar
1

I have setup a cname for mydomain.com to be an alias of app1.herokuapp.com and it works. However, cname for sub.mydomain.com as an alias of app2.herokuapp.com does not work.

It does not work with either grey or orange cloud and having clicked on the " I am done " button. Any ideas?

ifacetimeapp

2

I don’t use Heroku, but the hosting server should be configured for specific CNAMEs to work.

Is Heroku configured to recognize your subdomain using a CNAME for app2?