UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36

Example URL:
all not-https subdomains of apiomat.com

Steps to reproduce the problem:
1. open an subdomain of apiomat.com
2. forwards automatically to https - NET::ERR_CERT_COMMON_NAME_INVALID
3. site can not be accessed

What is the expected behavior?
Only include the main domain apiomat.com to the HSTS preloded List but none of the subdomains.

What went wrong?
I set the preload HSTS header to our website's htaccess on 30th november 2015 as follows:

Header set Strict-Transport-Security "max-age=10886400; includeSubDomains=false; preload" env=HTTPS

I set includeSubdomains option to false because not all our subdomains are secured with https.
Now, after a long time, suddenly our subdomains are no longer reachable anymore. Could you make sure, that this option will be deleted from the preload list?

Thank you a lot!

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes till about 1 week ago.

Does this work in other browsers? Yes 

Chrome version: 49.0.2623.87  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 21.0 r0