In order to use your own domain or subdomain with SkyPrep, you need to
point your subdomain’s CNAME record to “custom.skyprepapp.com”
Make sure the CNAME record points to “custom.skyprepapp.com” (and NOT your current .skyprepapp.com domain)
For example, if your current SkyPrep account is hosted at acme.skyprepapp.com, and you’d like to host your SkyPrep account on training.acme.com then:
Point the CNAME record of training.acme.com to custom.skyprepapp.com (and NOT acme.skyprepapp.com)
To enable SSL/TLS for your domain (highly recommended), please read the instructions here.
Once this is completed, please let us know.