Apter tried to change itms-services://?action=download-manifest&url=http://....
to itms-services://?action=download-manifest&url=https://....
. It also cannot worked. The alert is cannot connect to my domain
. I find out that also need update the webpage too.
The issue isn’t with the main URL being HTTPS but some of the HTML code in a link within the page. You’ll need your developers to update the webpage. I also noticed there isn’t a valid SSL certificate on your staging domain so you’ll need to get one installed or use Dropbox and here is the link maybe helpful for you