404 when accessing site (mydigitalgarden.space)

Accessing the site results in a 404 - it’s been like this for about a week, but I can’t find any errors, anywhere, other than when I try to access the site (from multiple devices, locations, browsers etc.).

This post seems similar to your issue: Why my Deployed Sites 404 Error

My website has been working fine for months beforehand - nothing new has changed, it has just suddenly stopped working, it seems. Everything is static.