P.S.S.:
I note that while the pi and books subdomains appear to have valid public DNS records, media does not. If that’s unintentional, you’ll probably need to address that first before you can connect.
I was able to access the HTTP redirector for Caddy at the expected domain with manual resolution to the IP address of the other two subdomains:
➜ curl -kIL http://media.leveloneadventure.me --resolve media.leveloneadventure.me:443:128.199.121.115 --resolve media.leveloneadventure.me:80:128.199.121.115
HTTP/1.1 308 Permanent Redirect
Connection: close
Location: https://media.leveloneadventure.me/
Server: Caddy
Date: Thu, 15 Jul 2021 23:51:06 GMT
curl: (35) error:14004438:SSL routines:CONNECT_CR_SRVR_HELLO:tlsv1 alert internal error
The HTTPS error occurs because Caddy presumably was unable to requisition a valid certificate and its default behaviour when no cert exists for a domain is to simply refuse to send any certificate, which results in a closed connection with a TLS error. I imagine once a DNS entry exists, things will clear right up.