Hi Stephen,
For privacy, I’ve replaced all references to your actual domain with mydomain.com below - but I did test with your actual domain name.
It looks like the server that’s performing the redirect doesn’t support HTTPS.
When I curl http://www.mydomain.com, I correctly get redirected to http://mydomain.com.
$ curl http://www.mydomain.com/
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://mydomain.com/">here</A>.
</BODY></HTML>
When I curl https://www.mydomain.com, I get an SSL error:
$ curl https://www.mydomain.com/
curl: (35) LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to www.mydomain.com:443
(In a web browser, the user is always directed to https:// because Anvil uses HSTS as part of our security model.)
I think it should be possible to configure the Synthetic Record to work over HTTPS, see this Stack Exchange question.
Alternatively, we can poke something manually our end to allow you to set up an A record for www.mydomain.com. This is something we’re happy to do for anybody.