Many answers are "contact the theme author". How?

Hello. I’m relatively new to Hugo and one of my methods is to do different Hugo sites (locally) running on different themes (in combination with DebugPrint). I thought the Universal theme by Devcows looked promising, but it doesn’t seem to deliver what it promises (or I can’t figure out how to see the variations).

For example, it advertises: " 5 variations of homepage", “11 extra pages showing template features”, “4 header variations”. This all sounds very interesting to learn from by examining the example code, but I don’t see it. And the developer’s website (which is also supposed to run on Hugo) does not register with any DNS server that I’m accessing.

When I search this forum, I find a lot of answers that simply say “contact the theme author”. How does one contact the theme author? TIA!