OP here. What browser/OS do you use? Our blog is run on Ghost so we don't actually control the TLS cert used, but we can try to find the cause of why it's not trusted and fix it.
Hi! John from Ghost here, had a quick look and can't see any issues on this side with the cert. It's a relatively new certificate, though, so there could be an old cache on an edge node somewhere which just hasn't fully updated yet.
I suspect this is a one-off, but please do reach out to us if you still have issues, I've already passed this along to the team to fast-track support if you do send us an email.
I suspect this is a one-off, but please do reach out to us if you still have issues, I've already passed this along to the team to fast-track support if you do send us an email.