I’ve been told the server is offline. I won’t be able to check and/or restore services until I get home.
Expect services restored by 7:00pm GMT-8 (-ish).
I wish I knew what went wrong.
EDIT: So apparently when I switched off of Cloudflare back to Namecheap’s DNS servers, I forgot to add services.rootbear.net to the DNS records. This has been rectified and all domains/subdomains should be working properly. I apologize for the inconvenience of the oversight.