HTTPs check certificate age

[Steven1 (Steven)]

Checkmk Raw Edition 2.1.0p28
Ubuntu 18.04 LTS

In the web interface I can see a check that looks like this:

When I do the same check manually on the CheckMK host, I get the expected result:

Could there be a caching issue?
Or is there something else I am missing?
(Server has been rebooted 2 days ago)

[Steven1 (Steven)]

Here you go:

[Steven1 (Steven)]

I found it, I forgot to specify the host itself to check.
Only the “service name” was specified, not the actual host settings. A stupid oversight on my part. (Which I now filled in)

Now, it detects the correct age of the certificate.