HSTS preload list status
The public preload list reports this domain as pending or rejected.
Why it matters
Pending means submission is queued. Rejected means the list refused the domain, often because a subdomain is not HTTPS.
What to do
Open the domain on hstspreload.org and fix the errors it lists before submitting again.
Reference
The Chromium HSTS preload list makes HTTPS the default before the first visit.