I always wanted to make use of this feature:
HTTP Strict Transport Security (HSTS)
Launched it recently. its working on my homepage.
Ive set dummy subdomain for test purposes. It had no ssl.
And subdomain stopped working when I added HSTS.
Note subdomain wasnt added to cloudflare.
I added it now but it doesnt fix anything.
I get this error on test subdomain:
How can I make use of hsts in case of new subdomains? Should I add subdomain to cloudflare first, and then create it? Or should I turn off hsts, then add subdomain to CF and create it as well, and then enable hsts?