I do a lot of Kickstarter. Most of those involve digital downloads, and most go through Backerkit. Backerkit gives a separate subdomain to every campaign.
The result is that I am constantly getting asked whether to allow downloads on, eg, "yetanothercampaign.backerkit.com", most of which are only used once.
It would make my life noticeably happier if I could mark all of Backerkit as "Allow", but that doesn't seem to be possible? I've tried allow-listing "*.backerkit.com", I've tried simply "backerkit.com" -- none of the obvious options seem to work.
There should be some way to say "allow-list downloads from subdomains of this site". My general instinct is that standard wildcarding with "" is the way to go (so I would specify ".backerkit.com" in my use case), but I honestly don't care much about the details, just that there is some way to make it happen.