SSL not working for level 1 subdomain

Hi I am using Cloudflare through the cpanel of my hosting.

mywebsite.com has SSL
www.mywebsite.com has SSL

test.mywebsite.com has no SSL certificate?

I get this error on chrome:

NET::ERR_CERT_AUTHORITY_INVALID

Everywhere I read that the standard free option covers both example.com and one level subdomain like *.example.com so it should be working fine.

What could be the problem for this?

Your DNS settings are managed by your partner. So the new record is likely not point to/through Cloudflare. You’ll need to modify the record there (or have them verify the config) so that it does resolve through Cloudflare.

Hi when I go to Cloudflare settings in cpanel it says Enabled. And if I look at the DNS it is like this:

Everyhting in red is my domain.nl

As you can see there is no test.domain.nl should I add that on my own?

Yes(?) sometimes partner setups can be a bit tricky because theoretically they can do some interesting things. If test is on the same host then you can probably follow the same pattern as the screenshot. See also:

https://support.cloudflare.com/hc/en-us/articles/203685674-What-are-the-partner-Cloudflare-setup-options-Full-DNS-vs-CNAME-