How long does Fedia.IO take for their registration email? - eviltoast

So I just signed up for Mbin at Fedia.IO, and part of the registration says it will send out an email to complete the registration. Great!

It’s been like 10 minutes with nothing in “all mail” and nothing in the trash or spam folders either. Is this something I need to wait a while for, or has something gone wrong, and I should contact their staff somehow?