I have now moved this website online. I did this for a few reasons. First I wanted to free up the Pi 4 for another project and I always had to spend time checking the site for attempted attacks (I could get dozens every day).  The security on it was very good and nothing ever got through but you can’t guard against every vulnerability. Another reason was that my DNS nameservers were not all in one place. My email mx records were with one company and redirected while the rest of my DNS records were with Ionos (1&1) so i wanted to consolidate everything. The site was migrated to Ionos where my emails are now also setup.