Moving to j5155.page
Today I moved this blog from j5155.duckdns.org to here, j5155.page. The domain name was extremely cheap to acquire using Porkbun.
Moving to a new domain with nginx and certbot
To migrate, all I had to do was change the domain name in nginx and the file name of the the certificate. Then, I just ran certbot certonly repeatedly for the domain shown in the file not found error until it worked.