Yup, we don’t serve it today:
$ host calendariconsgenerator.app
calendariconsgenerator.app has address 104.24.117.76
calendariconsgenerator.app has address 104.24.116.76
calendariconsgenerator.app has IPv6 address 2606:4700:3036::6818:754c
calendariconsgenerator.app has IPv6 address 2606:4700:3035::6818:744c
…cloudflare does, so we can’t get a certificate. This article explains the situation in much more detail: [Support Guide] What problems could occur when using Cloudflare in front of Netlify?